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How much potassium chlorate should be …

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How much potassium chlorate should be heated to produce 2.24L of oxygen at NTP?

Posted by Yash Adhikari 1 year, 9 months ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Dabral 1 year, 9 months ago

When potassium chlorate is heated, then following reaction takes place:

2KClO₃ {tex}\rightarrow{/tex} 2KCl + 3O₂

Molecular mass of 1mol KClO₃ = 39 + 35.5 + 3 {tex}\times{/tex}16= 122.5 g

Molecular mass of 2 mols of KClO₃ = 2{tex}\times{/tex}122.5 g =245 g

Volume occupied by 3 mol of oxygen = 3{tex}\times{/tex}22.4L = 67.5 L

Therefore, 67.2L of oxygen is produced from 245g of KClO₃

2.24L of oxygen is produced from = {tex}\frac { 245 } { 67.2 } \times 2.24{/tex}= 8.17g of KClO₃

0Thank You

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