Question

(2) 10 'N
(3) 10 N
(4) 10 2 N
100 mL of PH, when completely decomposed
produces phosphorus and hydrogen. The
change in volume of the gas is -
PH2(g) → 2P(s) + 3 H (3)
(1) 50 mL increase (2) 500 mL decrease
(3) 900 mL decrease (4) No change​

Answer 1

There is no change in the volume of gas

Answer 2

Answer:

1

Explanation:

     2PH₃ → 2P + 3H₂

        2n     2n     3n      (stoichiometric ratios)

Phosphorus produced is in solid state.

Considering H₂ as an ideal gas ,

PV=nRT

V=nRT/P

100=2nRT/P ---1

v*=3nRT/P ---2

1/2

v*=300/2=150

But change in volume =Final volume- Initial Volume

∴final volume = 150-100= 50 ml increase.