Question

# 4.5 g of aluminium is deposited at cathode from Al3+ solution by a certain quantity of electric charge. The volume of hydrogen produced at STP from H+ ions is solution by the same quantity of electric charge will be?

Open in App
Solution

## Step 1: Given data Weight of Aluminium =$4.5g$Step 2:Calculating No. of equivalentsNo.of equivalents of Aluminium deposited$=\frac{4.5}{9}=0.5$No.of equivalents of ${\mathrm{H}}_{2}$ will also be $0.5$Step 3: Deriving Volume of Hydrogen gas Volume of ${\mathrm{H}}_{2}$ at STP, $=\mathrm{No}.\mathrm{of}\mathrm{equivalents}\mathrm{x}\mathrm{Equivalent}\mathrm{volume}\phantom{\rule{0ex}{0ex}}=0.5\mathrm{x}11.2\phantom{\rule{0ex}{0ex}}=5.6\mathrm{L}$

Suggest Corrections
3
Explore more