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Define cell constant. How is it related to conductivity.?
other than
learn this
log 10=1 log 100=2 log 1000=3 and so on.
now,coming to your question,
log 0.130 is same as log 130/1000.
log 130/1000 = log 130 - log 1000
= 2.113 - 3
= -0.8860.
what is debye huckel onsagers equation?
calculate the strength of current required to deposit 1.2 gm of magnesium from molten mgcl2 in 1 hr
what is salt bridge?
explain its function?
For how long a current of 1.5 ampere has to be passed through the electrolyte innorder to deposit 1g of Al when the electrode reaction is
Al3+ +3e → Al (Z=27)
how to take out the log of 13 * 10 power 6please explain properly
!!!!
Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.
How many coulombs of electric charge mst be passed through a solution of Silver Nitrate to coat a copper sheet of area 100 cm sq on both sides with 0.005 mm thickness . density of Ag is 10.5 g/cm3 . (Ag=108)
Why does a dry cell become dead after a long time even if it has not been used?
what is discharge potential ?
The equivalent conductance of 0.1 normal solution og MgCl2 is 97.1 ohm-1cm2eq-1(unit) at 25 degree C .A cell with electrodes that are 1.5cm square in surface area and 0.5cm apart ,0.1N MgCl2 sol.How much current will flow when potential difference between the electrodes is 5Volts..(final answer is I=0.1456A)
plz ans in a simple way..
The products of electrolysis of molten NaCl are Na metal and Cl2 gas, while the products of electrolysis of aqueous solution of NaCl are NaOH, Cl2 and H2.
Please explain this in detail with the appropriate reactions.
what is the difference between E cell and E0 cell??
what is redox couple
why does mercury cell give a constant voltage throughout its life?
Here are a list of q'z pls ans. them briefly
q1)The number of faradays required to deposit 1g equivalent of alumininium(at wt.27)from a soln of AlCl3 is-
q2)What is the electrochemical equivalent of Cu in the rxn-
Cu2++2e---------Cu
q3)The specifc conductance of saturated soln of CaF2 is 3.86*10(power -15) and that of water used for solution is 0.15*10(power -5).What is the specific conductance of CaF2 alone?
q4)What is the molar conductivity "^". If resistivity is 'x' for 0.1 N H2SO4 solution?
q5)The conductivities at infinite dilution of NH4CL,NAOH and NaCl are 130,218,120.If equivalent conductance of N/100 soln of NH4OH is 10,degree of disociation of NH4OH at this dilution is-
q6)The resistance of a N/10 KCL aq. soln is 245 ohms.If the electrodes in the cell are 4cm apart and area having 7 cm sq. each,the molar conductance of the soln will be?
The conductivity of 0.1 M solution of AgNO3 is 9.47 X 10-3 S cm-1 at 291 K. The ionic conductivities os Ag+ and NO3-at the same temperature are 55.7 and 50.8 Scm2equiv-1 respectively. Calculate the degree of dissociation of AgNO3 in 0.1 M solution. How to solve this and what's the meaning of ionic conductivities of the ions given here?
4/3 Al+O2 gives out 2/3 Al2O3. Find the minimum emf required to carry out the electrolysis of Al2O3.
delta G=-827kJ per mol of O2
Predict the products of electrolysis in each of the folloiwng:
the blue colour of CuSO4 solutions is slowly discharged when a rod of zinc is dipped in it . explain..
What is the factors affecting electrode potential ?
Why Leclanche cell is also called Dry ?
Can 1 M NiSO4be stored in a vessel made up of copper?given: E(Ni2+/Ni ) = -1.20V and E (Cu2+/Cu) =0.34V
My doubt is (if wrong plz correct it) according to reation Ni I Ni+2 II Cu+2 I Cu ,this reaction will occur spontaneously,Then how could NiSO4 be stored in vessel made up of copper?It should react with it.Please explain And Sir plz don't paste the answer given to Priyanka as I couldn't understand that one.
construction working and uses of daniell cell
Represent the cell made up of the following cell reactions:
Mg>>>>Mg2+ (0.01 M)+2e E0 =+2.34 V
Sn+2 (0.1 M) +2e>>>>Sn E0 =-0.136 V
Calculate the emf of the above cell at 250 C
Q. Explain the Molar Conductivity with weak and strong electrolytes ?
What are metallic conductors and electrolytic conductors?plz give examples also
What is the difference between galvanic cell & daniel cell?
Calculate the potential of the half cell containing 0.10M K2Cr2O7, 0.20M Cr+2, and 1.0* 10-4M H+. The half cell reaction is
Cr2O7-2 +14 H++ 6e---------------- 2Cr+3 +7 H20
The standard electrode potential is given as 1.33V.???
Rate constant, K for first order reaction has been found to be 2.54*10 to the power -3 per sec. Calculate its three-fourth life.
The molar conductivities at infinite dilution for NaI, CH3COONa and (CH3COO)2Mg are 12.69, 9.10 and 18.78 S m² mol−1. What is Λ°m for MgI2 ?
The conductance of 0.1 M acetic acid at 298 K is 5.20 and that of 0.001 M acetic acid is 49.2. The ionic molar conductivity at infinite dilution of acetate and hydrogen ions are 349.8 and 40.9 S cm2 mol-1 resp. Calculate the degree of dissociation of acetic acid at these concentrations.
Sir, how to solve this.. and the conductances given in the first statement may be confused with conductivities because with dilution, it has decreased.. right sir?? or not??
for the reaction 3A(g)+B(g)=2C(g) at a given temperature,Kc=9.0 . what must be the volume of the flask, if a mixture of 2.0 mole each of A,B and C exist in equilibrium?
How to draw the resonating structures of H2SO4 and H2SO5 ???
Silver is electrodeposited on a metallic vessel of surface area 800 cm2 by passing
What is the function of porous pot in daniell cell ?
What are the major topics of electrochemistry that can be asked in Chemistry Board Exam..
I mean.. right now it is no point studying this chapter from scratch.. there is?
What all should be studied in Electrochemistry for Chemistry Board?
whai is faraday"s law of electrolysis....pls explain im not able to understand....
why is alternating current used instead of direct current in measuring electrolytic conduction ?
Discuss the factors which affect electrolytic dissociation.
calculate the equivalent conductance of 1 M h2so4 solution if its conductivity is 2.6x10 to the power -2 /ohm cm
give a test to distinguish b/w ethylamine and aniline ?
The metals that cannot be obtained by electrolysis of an aqueous solution of its salt is:
I) Ca
ii)Cu
iii)Cr
iv)Ag
state two advantages of (H2
answer it fastly!!!!!
Arrange the given alkoxides in order of their decreasing basic strengths.
a voltanic cell is set up in 25 degre c Al|Al3+(0.001M) and Ni| Ni2+(0.50M) calculate cell voltage
ans -1.46v
what is the cell potential of lead storage battery and nickel-cadmium cell????
The resistance of a conductivity cell containing 0.001M KCl solution is 1500 ohm. What is the cell constant if conductivity of the solution at 298K is 0.000146 S/cm.
What id c1/2 in ncert question electrochemistry 3.10.. please tell..
Cu does not dissolve in HCl but dissolves in nitric acid. Explain why?
Why mercury does not form amalgam with Iron?
What is the name of these compound[Zn(NH3)2Cl2] ?
what is the difference among E0cell , Ecell, emf and potential difference....explain
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Syllabus
Define cell constant. How is it related to conductivity.?
other than
learn this
log 10=1 log 100=2 log 1000=3 and so on.
now,coming to your question,
log 0.130 is same as log 130/1000.
log 130/1000 = log 130 - log 1000
= 2.113 - 3
= -0.8860.
what is debye huckel onsagers equation?
calculate the strength of current required to deposit 1.2 gm of magnesium from molten mgcl2 in 1 hr
what is salt bridge?
explain its function?
For how long a current of 1.5 ampere has to be passed through the electrolyte innorder to deposit 1g of Al when the electrode reaction is
Al3+ +3e → Al (Z=27)
how to take out the log of 13 * 10 power 6please explain properly
!!!!
Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.
How many coulombs of electric charge mst be passed through a solution of Silver Nitrate to coat a copper sheet of area 100 cm sq on both sides with 0.005 mm thickness . density of Ag is 10.5 g/cm3 . (Ag=108)
Why does a dry cell become dead after a long time even if it has not been used?
what is discharge potential ?
The equivalent conductance of 0.1 normal solution og MgCl2 is 97.1 ohm-1cm2eq-1(unit) at 25 degree C .A cell with electrodes that are 1.5cm square in surface area and 0.5cm apart ,0.1N MgCl2 sol.How much current will flow when potential difference between the electrodes is 5Volts..(final answer is I=0.1456A)
plz ans in a simple way..
The products of electrolysis of molten NaCl are Na metal and Cl2 gas, while the products of electrolysis of aqueous solution of NaCl are NaOH, Cl2 and H2.
Please explain this in detail with the appropriate reactions.
what is the difference between E cell and E0 cell??
what is redox couple
why does mercury cell give a constant voltage throughout its life?
Here are a list of q'z pls ans. them briefly
q1)The number of faradays required to deposit 1g equivalent of alumininium(at wt.27)from a soln of AlCl3 is-
q2)What is the electrochemical equivalent of Cu in the rxn-
Cu2++2e---------Cu
q3)The specifc conductance of saturated soln of CaF2 is 3.86*10(power -15) and that of water used for solution is 0.15*10(power -5).What is the specific conductance of CaF2 alone?
q4)What is the molar conductivity "^". If resistivity is 'x' for 0.1 N H2SO4 solution?
q5)The conductivities at infinite dilution of NH4CL,NAOH and NaCl are 130,218,120.If equivalent conductance of N/100 soln of NH4OH is 10,degree of disociation of NH4OH at this dilution is-
q6)The resistance of a N/10 KCL aq. soln is 245 ohms.If the electrodes in the cell are 4cm apart and area having 7 cm sq. each,the molar conductance of the soln will be?
The conductivity of 0.1 M solution of AgNO3 is 9.47 X 10-3 S cm-1 at 291 K. The ionic conductivities os Ag+ and NO3-at the same temperature are 55.7 and 50.8 Scm2equiv-1 respectively. Calculate the degree of dissociation of AgNO3 in 0.1 M solution. How to solve this and what's the meaning of ionic conductivities of the ions given here?
4/3 Al+O2 gives out 2/3 Al2O3. Find the minimum emf required to carry out the electrolysis of Al2O3.
delta G=-827kJ per mol of O2
Molar conductivity at infinite dilution for NH4Cl, NaOH and NaCl solution at 298K are respectively 129.8, 218.4 and 108.9 Scm2 mol-1 and ^m for 10-2 M solution of NH4OH is 9.33 Scm2 mol-1. Calculate the degree of dissociation of NH4OH
Predict the products of electrolysis in each of the folloiwng:
(i) An aqueous solution of AgNO3 with silver electrodes.(ii) An aqueous solution of AgNO3 with plantinum electrodes.(iii) A dilute solution of H2SO4 with platinum electrodesthe blue colour of CuSO4 solutions is slowly discharged when a rod of zinc is dipped in it . explain..
What is the factors affecting electrode potential ?
Why Leclanche cell is also called Dry ?
(A) 3 x 105 (B) 9 x 105 (C) 4.5 x 105 (D) 5.16 x 105
Can 1 M NiSO4be stored in a vessel made up of copper?given: E(Ni2+/Ni ) = -1.20V and E (Cu2+/Cu) =0.34V
My doubt is (if wrong plz correct it) according to reation Ni I Ni+2 II Cu+2 I Cu ,this reaction will occur spontaneously,Then how could NiSO4 be stored in vessel made up of copper?It should react with it.Please explain And Sir plz don't paste the answer given to Priyanka as I couldn't understand that one.
construction working and uses of daniell cell
Represent the cell made up of the following cell reactions:
Mg>>>>Mg2+ (0.01 M)+2e E0 =+2.34 V
Sn+2 (0.1 M) +2e>>>>Sn E0 =-0.136 V
Calculate the emf of the above cell at 250 C
Q. Explain the Molar Conductivity with weak and strong electrolytes ?
What are metallic conductors and electrolytic conductors?plz give examples also
What is the difference between galvanic cell & daniel cell?
Calculate the potential of the half cell containing 0.10M K2Cr2O7, 0.20M Cr+2, and 1.0* 10-4M H+. The half cell reaction is
Cr2O7-2 +14 H++ 6e---------------- 2Cr+3 +7 H20
The standard electrode potential is given as 1.33V.???
1. 1 : 2 : 3 2. 3 : 2 : 1 3. 6 : 3 : 2 4. 3 : 4 : 2
Q. Fill in the blanks:
As concentration of an electrolyte solution increases, its ______ conductance increases but ______ conductance decreases.
Rate constant, K for first order reaction has been found to be 2.54*10 to the power -3 per sec. Calculate its three-fourth life.
The molar conductivities at infinite dilution for NaI, CH3COONa and (CH3COO)2Mg are 12.69, 9.10 and 18.78 S m² mol−1. What is Λ°m for MgI2 ?
The conductance of 0.1 M acetic acid at 298 K is 5.20 and that of 0.001 M acetic acid is 49.2. The ionic molar conductivity at infinite dilution of acetate and hydrogen ions are 349.8 and 40.9 S cm2 mol-1 resp. Calculate the degree of dissociation of acetic acid at these concentrations.
Sir, how to solve this.. and the conductances given in the first statement may be confused with conductivities because with dilution, it has decreased.. right sir?? or not??
for the reaction 3A(g)+B(g)=2C(g) at a given temperature,Kc=9.0 . what must be the volume of the flask, if a mixture of 2.0 mole each of A,B and C exist in equilibrium?
Assertion: Ecell should have positive value for the cell to function.
Reason: Ecathode < Eanode .
How to draw the resonating structures of H2SO4 and H2SO5 ???
Silver is electrodeposited on a metallic vessel of surface area 800 cm2 by passing
current of 0.2 A for 3 hours. Calculate the thickness of silver deposited.What is the function of porous pot in daniell cell ?
What are the major topics of electrochemistry that can be asked in Chemistry Board Exam..
I mean.. right now it is no point studying this chapter from scratch.. there is?
What all should be studied in Electrochemistry for Chemistry Board?
whai is faraday"s law of electrolysis....pls explain im not able to understand....
why is alternating current used instead of direct current in measuring electrolytic conduction ?
Discuss the factors which affect electrolytic dissociation.
calculate the equivalent conductance of 1 M h2so4 solution if its conductivity is 2.6x10 to the power -2 /ohm cm
Mg(s) + 2Ag+(aq) --> Mg2+(aq) +2Ag(s); E0cell=+3.16 V
- Mg(s) | Mg2+(aq)
- Ag(s) | Ag+ (aq)
The emf of the cell is 2.96 V at [Mg2+] = 0.130 M and [Ag+] = 1.0 * 10-4 M. Calculate the standard emg of the cell ( R = 8.3 JK-1 mol-1 , F = 96500 C )I am asking this question 2nd time soo plzz give me the answer this time.
give a test to distinguish b/w ethylamine and aniline ?
The metals that cannot be obtained by electrolysis of an aqueous solution of its salt is:
I) Ca
ii)Cu
iii)Cr
iv)Ag
state two advantages of (H2
O2) fuel cell over ordinary cell.answer it fastly!!!!!
Arrange the given alkoxides in order of their decreasing basic strengths.
a voltanic cell is set up in 25 degre c Al|Al3+(0.001M) and Ni| Ni2+(0.50M) calculate cell voltage
ans -1.46v
Given E° (A2+ / A) = -2.37 V and E° (B2+ / B ) = -0.14 V
what is the cell potential of lead storage battery and nickel-cadmium cell????
The resistance of a conductivity cell containing 0.001M KCl solution is 1500 ohm. What is the cell constant if conductivity of the solution at 298K is 0.000146 S/cm.
What id c1/2 in ncert question electrochemistry 3.10.. please tell..
Cu does not dissolve in HCl but dissolves in nitric acid. Explain why?
What is the relation between lambda equivalent and V?
Lambda m = molar conductivity
Lambda eq = equivalent conductivity.
Why mercury does not form amalgam with Iron?
What is the name of these compound[Zn(NH3)2Cl2] ?
what is the difference among E0cell , Ecell, emf and potential difference....explain