Question

For the gaseous reaction H2 +Cl2 gives 2HCl.if initially 20mL of hydrogen gas and 30 mL of chlorine gas are?

Answer 1

Answer:Volume of HCl formed = 40ml

Volume of Cl2 gas left unreacted = 10ml

Explanation:

As from the reaction equation it is clear that one mole of hydrogen gas react with one mole of chlorine gas to form two mole of HCl, thus 22.4 liter at STP (or 24 liter at RTP) of each Hydrogen and Chlorine would react to form 2×22.4 liter of HCl at STP.

On simplification (dividing both sides by 22.4) it imploes that one liter of Hydrogen plus one liter of Chlorine = two liter of HCl

thus

20 ml of H2 plus 20 ml of Cl2 = 2×20 ml of HCl

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