Q19 of 53 Page 1

(a) Calculate ΔrG0 for the reaction:

Mg(s) + Cu2+ (aq) → Mg2+(aq) + Cu(s)


(Given: E0cell = +2.71V, 1F = 96500 C/mol)


(b) Name the type of cell which was used in Apollo space programme for providing electrical power.


(a) Given n=2 (from the given reaction)



(b) In Apollo space program, Fuel cells were used which are specially designed galvanic cells which directly convers the energy from the combustion of fuel to electrical energy.


More from this chapter

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17

Write the mechanism of the following reaction:


 18

Write the name of monomers used for getting the following polymers:
(i) Bakelite
(ii) Neoprene

 20

The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume:

SO2Cl2(g) → SO2(g) + Cl2(g)


Experiment Time/ s-1 Total pressure/atm


1 0 0.4


2 100 0.7


Calculate the rate constant.


(Given: log 4 = 0.6021, log 2 =0.3010)


 21

What are emulsions? What are their different types? Give one example of each type.