Solveeit Logo
Login

Question

Chemistry Question on Rate of a Chemical Reaction

A gaseous reaction X2(g)→Y+12Z(g)X_2(g) \to Y + \frac{1}{2} Z(g) There is increase in pressure from 100 mm100 \,mm to 120 mm120 \,mm in 55 minutes. The rate of disappearance of X2X_2 is

A

8 mmmin⁡−18 \,mm \min ^{-1}

B

2 mmmin⁡−12\, mm \min ^{-1}

C

16 mmmin⁡−116\, mm \min ^{-1}

D

4 mmmin⁡−14\, mm \min ^{-1}

Answer

8 mmmin⁡−18 \,mm \min ^{-1}

Explanation

Solution

The increase in pressure shows the increase in conc. of ZZ.
Rate of appearance of Z=120−1005=4 mm min−1Z = \frac{120-100}{5}=4 \,mm \,min ^{-1}
Rate of disappearance of X2=2×X_{2}=2 \times rate of appearance of ZZ
=2×4 mmmin⁡−1=8 mm min⁡−1=2 \times 4 \,mm \min ^{-1}=8\, mm \,\min ^{-1}