The volume of perhydrol which on decomposition gives 1.5 lit of  O2 gas at STP is

# The volume of perhydrol which on decomposition gives 1.5 lit of  ${O}_{2}$ gas at STP is

1. A

25 ml

2. B

15 ml

3. C

10 ml

4. D

2 ml

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### Solution:

Volume of solution of perhydrol is 100V

$1lit\text{\hspace{0.17em}\hspace{0.17em}}{H}_{2}{O}_{2}\text{\hspace{0.17em}}-----100lit\text{\hspace{0.17em}}of\text{\hspace{0.17em}}{O}_{2}$

$\text{\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}}?\text{\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}\hspace{0.17em}}-----\text{\hspace{0.17em}}1.5\text{\hspace{0.17em}}lit\text{\hspace{0.17em}}of\text{\hspace{0.17em}}{O}_{2}$

$\frac{1.5×1}{100}×1000=15ml$

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