Question

When 2 gm magnesium reasts with excess of HCl and H2 gas is produced then the volume of H2 gas produced is ____ × 10–2 liter at STP. (Nearest Integer)

Answer 1

The correct answer is : 187

Mg+2HCl$\rightarrow$MgCl2+H2(gas)

$\frac{2}{24}\times22.4$

=$1.87$ L

=$187\times10^{-2}$ L