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Define cell constant. How is it related to conductivity.?

.130-log of[.0001]???^{2}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?

what is salt bridge?

explain its function?

1 ) making it cathode 2 ) putting in saline water 3 ) both ( 1 ) and ( 2 ) 4 ) none of these

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 products of electrolysis of molten NaCl are Na metal and Cl

_{2}gas, while the products of electrolysis of aqueous solution of NaCl are NaOH, Cl_{2}and H_{2}.Please explain this in detail with the appropriate reactions.

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

Al

^{3+}+3e → Al (Z=27)what is the difference between E cell and E

^{0 cell??}can chlorine gas be stored in copper cylinder ? given electrode potential for(Cu2+/Cu)= 0.34V and electode potential for (Cl2/Cl-)=1.36V

^{–6 }mho cm^{–1}. Find the solubility product of AgCl at 25°C.$\left({\mathrm{\lambda}}_{\mathrm{AgCl}}^{\infty}=138.3\mathrm{mho}{\mathrm{cm}}^{2}\right)$

what is redox couplewhy does mercury cell give a constant voltage throughout its life?

The molar conductivities at infinite dilution for NaI, CH

_{3}COONa and (CH_{3}COO)_{2}Mg are 12.69, 9.10 and 18.78 S mÂ² mol^{âˆ’1}. What is Î›_{Â°m}for MgI_{2 }?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?

4/3 Al+O

_{2}gives out 2/3 Al_{2}O_{3.}Find the minimum emf required to carry out the electrolysis of Al_{2}O_{3.}delta G=-827kJ per mol of O

_{2}- Mg
- Ag

The emf of the cell is 2.96 V at [Mg_{(s)}| Mg^{2+}_{(aq) }_{(s) }| Ag^{+}(aq)^{2+}] = 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.

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 electrodeslimitations of standard hydrogen electrode

What is the factors affecting electrode potential ?

a solution of copper sulphate containing 50 moles of salt dissolved in 1 cubic metre of solution has specific conductance of 0.65/m . calculate molar conductance.

^{3}) C is measured at 20^{0}C. The slope of a plot of $\mathrm{\pi}$ against C is found to be 4.65 x 10^{-3}. The molecular weight of the insulin is(A) 3 x 10

^{5}(B) 9 x 10^{5}(C) 4.5 x 10^{5}(D) 5.16 x 10^{5}y does blue colour of copper sulphate get discharged when zinc rod is dipped in it??

given electrode potential for (Cu2+/Cu)=0.34 Vand electrode potentialfor(Zn2+/Zn)=-0.76V

construction working and uses of daniell cell

Q. Explain the Molar Conductivity with weak and strong electrolytes ?

What are metallic conductors and electrolytic conductors?plz give examples also

What is the function of porous pot in daniell cell ?

What is the difference between galvanic cell & daniel cell?

(a) In a dry cell, the build up of ammonia around the carbon cathode should disrupt the electric current, but in practice this does not happen.

(b) Ordinary dry cells are not rechargeable

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

Cr

_{2}O_{7}^{-2}+14 H^{+}+ 6e^{-}--------------- 2Cr^{+3}+7 H_{2}0The standard electrode potential is given as 1.33V.???

1) different metallic conductor

2) different electrolytic conductor?

1. 1 : 2 : 3 2. 3 : 2 : 1 3. 6 : 3 : 2 4. 3 : 4 : 2

_{4}(aq) and a lead electrode in contact with 0.1M Pb(NO_{3})_{2}(aq), respectively, at 25ºC.The standard reduction potentials are:

Pb

^{2+}+ 2 e- → Pb; Eº= -0.13 VCu2+ + 2 e- → Cu; Eº= +0.34 V

If H

_{2}SO_{4}is being added to the half-cell containing Pb(NO_{3})_{2}(thus forming a precipitate of PbSO_{4}), until the final concentration of SO^{2-}_{4}ions in solution is 2.4 x 10^{-1}M, what is the cell potential in Volt? Assume the volume of the the half-cell does not change upon addition of H_{2}SO_{4}. Ksp(PbSO_{4})=6.3 x10^{-7}?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 blue colour of CuSO

_{4}solutions is slowly discharged when a rod of zinc is dipped in it . explain..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?

what is the difference among E0cell , Ecell, emf and potential difference....explain

The conductivity of

0.1M solution of AgNO_{3}is9.47 X 10S cm^{-3}^{-1 }at 291 K. The ionic conductivities os Ag^{+}and NO_{3}^{-}at the same temperature are55.7and50.8Scm^{2}equiv^{-1}respectively. Calculatethe degree of dissociationof AgNO_{3}in 0.1 M solution. How to solve this and what's the meaning of ionic conductivities of the ions given here?How to draw the resonating structures of H2SO4 and H2SO5 ???

calculate the strength of current required to deposit 1.2 gm of magnesium from molten mgcl2 in 1 hr

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 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?

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??

why is alternating current used instead of direct current in measuring electrolytic conduction ?

calculate the equivalent conductance of 1 M h2so4 solution if its conductivity is 2.6x10 to the power -2 /ohm cm

A.0.1 M aq. NH4OH

B.0.1 M aq. UREA

C.0.1M aq.CH3COOH

D. 0.1 M aq. NaCl

What is the EMF of the Cell when the cell reaction attains equilibrium ?- (1 MARKS) - [URGENT ANSWER NEEDED]

give a test to distinguish b/w ethylamine and aniline ?

_{2} from the following data: the molar ionic conductances (at infinite dilution) of Ca^{2+ }and F^{- }ions are 104 x 10^{-4 }and 48 x 10^{-4 }S m^{2}mol^{- }, respectively. The specific conductance of the saturated solution of CaF_{2 }at room temperature is 4.25 x 10^{-3 }S m^{- }and specific conductance of water used for preparing the solution is 2 x 10^{-4 }S m^{-}.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 (H

O_{2}_{2}) fuel cell over ordinary cell.answer it fastly!!!!!

The emf of the cell Zn|Zn2+(0.1 M)||Cd2+(M1)|Cd has been found to be 0.3305 V at 298 K.

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

^{2}^{+}/ Fe) = -0.44 V ] to prevent corrosion and why ?Given E° (A

^{2}^{+ }/ A) = -2.37 V and E° (B^{2+ }/ B ) = -0.14 VWhat is the name of these compound[Zn(NH

_{3})_{2}Cl_{2}] ?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.

Cu does not dissolve in HCl but dissolves in nitric acid. Explain why?

If K

_{w}of water at 25^{o}C is 10^{-14}, calculate the standard reduction potential of the following reaction at 25^{o}C.2H

_{2}O + 2e^{-}------------- H_{2}+ 2OH^{-}Given 2H

^{+}+ 2e^{-}-------------- 2H_{2}E^{o}= 0.0 V.Why mercury does not form amalgam with Iron?

^{-1}cm^{2}/ mol. At the same temperature, but at a concentration of 1 mole in 1000 litres, it is 55 ohm^{-1 }cm^{2}/ mol. what is the percentage dissociation of acetic acid?andMnO2in dry cell?charcoal