Question

22.4dm3 of value of each H2 and O2 are sparked to produce water vapours (consider an ideal gas) on completion of reaction what is decrease in volume of vessels?

Answer 1

22.4 dm³ or 22.4 L of value of each H2 and O2 are sparkled to produce water vapours on completion of reaction..

chemical reaction between hydrogen and oxygen is .....

$2H_2(g)+O_2(g)\rightarrow 2H_2O(l)$

here we see that 2 moles of H2 react with one mole of O2.

we know, volume of one mole of ideal gas is 22.4L.

so, 44.8 L of H2 reacts with 22.4 L of O2.

or, 22.4L of H2 reacts with 11.2L of O2.

so, volume of remaining O2 = 22.4 L - 11.2L = 11.2L

so, final volume = 11.2 L

and initial volume = 22.4 L + 22.4L = 44.8L

so, decreases in volume = 44.8 - 11.2 = 33.6 L