Question

The weight of silver (at. wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of O₂ at STP will be

(a) 5.4 g

(b) 10.8 g

(c) 54.0 g

(d) 108.0 g

Answer 1

Correct option (d) 108.0 g

Explanation :

According to Faraday's second law,

Comments

How is equivalent weight of O2 =8÷32

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Configuration of Oxygen is 1s2 2s2 2p4
So number of lone electrons is 4
The compound given is O2.. so total lone electrons is 8
And atomic mass of O2 is 32
So equivalent weight 8÷32