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Subject: Chemistry, asked 7 hours, 56 minutes ago

10. For which one of the reactions, ΔH is NOT equal to ΔU?  a) H2(g) + I2(g)  2HI(g)   b) N2(g) + 3H2(g)  2NH3(g)    c) C(s) + O2(g)  CO2(g)     d) HCl(aq) + NaOH(aq)  H2O(l)

Subject: Chemistry, asked 8 hours, 7 minutes ago

In free expansion of gas …….  a) W = +ve  b) W = -Ve  c) W = 0  d) W = Wmax

Subject: Chemistry, asked 8 hours, 8 minutes ago

A system absorbs 600 J of heat and does work equivalent to 900 J by expanding .The change in internal energy for the system is-:  a) -300 J  b) +300J  c) -600 J  d) +600 J

Subject: Chemistry, asked 9 hours, 31 minutes ago

For the reaction N2(g) + 3H2(g)  2NH3(g) , ΔH =….?  a) ΔU+2RT  b) ΔU-2RT  c) ΔU + RT d) ΔU 

Subject: Chemistry, asked 9 hours, 38 minutes ago

what are uni, bi, and tri molecular reactions

Subject: Chemistry, asked 9 hours, 42 minutes ago

H2(g) + Cl2(g)  2HCl(g) , ΔH = -184kJ ,if 2 moles of H2 reacts with 2 moles of Cl2 ,then ΔU is equal to-

Subject: Chemistry, asked 12 hours, 6 minutes ago

What does n represent in nernst equation

Subject: Chemistry, asked 1 day, 10 hours ago

what is
hydroboration oxidation?

Subject: Chemistry, asked 1 day, 14 hours ago

Explain the following reactions with an example for each :
(i) Reimer-Tiemann reaction
(ii) Friedel-Crafts reaction. 

Subject: Chemistry, asked 1 day, 15 hours ago

Write the reactions involved in the following reactions:
(i) Clemmensen reduction
(ii) Cannizzaro reaction

Subject: Chemistry, asked 1 day, 16 hours ago

Express the relation among cell constant, resistance of the solution in the cell and conductivity of the solution. How is molar conductivity of a solution related to its conductivity?

Subject: Chemistry, asked 1 day, 16 hours ago

What is meant by chelate effect? 
 

Subject: Chemistry, asked 1 day, 16 hours ago

Differentiate between molecular structures and behaviours of thermoplastic and thermosetting polymers. Give one example of each type.

Subject: Chemistry, asked 1 day, 17 hours ago

The rate constant for a reaction of zero order in A is 0.0030 mol L-1 s-1. How long will it take for the initial concentration of A to fall from 0.10 M to 0.075 M?

Subject: Chemistry, asked 1 day, 17 hours ago

Why does LiCl acquire pink colour when heated in Li vapours? 

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