Question

The volume (in ml) of oxygen liberated at STP when $100$ ml of $15V$ $H_2{O}_2$ decomposes is:

• A. $150$
• B. $300$
• C. $3000$
• D. $1500$

Answer 1

Answer: (D)

$1500$

$1$ ml $H_2{O}_2$ of $15$ vol liberates $15$ ml of $O_2$ at STP.
Hence, $100$ ml $H_2{O}_2$ of $15$ vol liberates $15\times 100$ ml of $O_2$ at STP or $1500$ ml of $O_2$ at STP.

Hence, option D is the correct answer.