Question

What volume (in L) does a 4.12 mol sample of hydrogen gas occupy at STP?

Answer 1

1. We are given :

• n = 4.12 mol

• at STP , we know that :

According to avogadro's law at STP 1 mole of gas occupy volume 22.414 L

2. Calculations :

If 1 mole : 22.424L

then,4.12mole : x L .......(do a cross multiply)

Therefore ; x L = 4.12Mole * 22.424L/ 1 mole

=92.38 Litres

≈92.4 L

• This means that 4.12 mol sample of hydrogen gas will occupy ,92.4 Litres