Question

Consider the following reaction of sodium thiosulphate with cl2
Na2S2O3 (aq) + 4Cl2 (g) + 5H2O (l) ----------> 2NaHSO4 (aq) + 8HCl (aq)
Choose the correct statement
1) 0.3 mole of Na2SO3 is required to react completely with 0.12 mole of Cl2
2) 0.24 mole of HCl will form from 0.12 mole of Cl2 on complete reaction
3) 1.5 mole of water is required for the reaction of 0.12 mole of Cl2
4) All are correct

Answer 1

Answer: All correct comrade.. :D

Explanation:

Answer 2

The correct option is 4)All are correct.

Reaction:

Na2S2O3(aq)+4Cl2(g)+5H2O→2NaHSO4(aq)+8HCl(aq).

1)In the reaction above 1 mole of Na2S2O3 react with 4 moles of Cl2.

So,

0.3 mole of Na2S2O3 will react completely with (0.3X4) mole of Cl2.

0.3 mole of Na2S2O3 will react completely with 0.12 mole of Cl2.

Thus, it is a correct statement.

2)In the reaction above 8 mole of HCl gets formed from 4 moles of Cl2, which further means that 2 moles of HCl is fromed from 1 mole of Cl2.

So,

0.24 mole of HCl gets formed from (0.24/2) mole of Cl2.

0.24 mole of  HCl gets formed from 0.12 mole of Cl2.

Thus, it is a correct statement.

3)4 mole of Cl2 requires 5 mole of H2O, which means that 1 mole of Cl2 requires(5/4) mole of H2O.

0.12 mole of Cl2 will requires $(\frac{5}{4} X0.12)$ mole of H2O.

0.12 mole of Cl2 require 0.15 mole of H2O.

It should be 0.15 mole of H2o not 1.5 mole, then only one of the options will be correct.

4)All are correct.

All the above statements are correct.

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