100 mL of `PH_(3)` on decomposition produced phosphorus and hydrogen. The change in volume is

Options

A. 50 mL increase
B. 500 mL decrease
C. 900 mL decrease
D. Nil

Answer

A

Explanation

`{:(2PH_(3), rarr, underset(("solid"))(2P),+,3H_(2)),(2 ml,,,,3 ml),(100 ml,,,,150 ml):}`
Increase in volume`=150 ml -100 ml =50 ml` increase.