Question

In the synthesis of ammonia from nitrogen and hydrogen gases, if 6*10⁻² moles of hydrogen disappears in 10 minutes ,the number of moles of ammonia formed in 0.3 minutes is

(A) 1.8*10⁻²

(B) 1.2*10⁻³

(C) 4*10⁻²

(D) 3.6*10⁻²​

Answer 1

━━━━━━━━❪❐━━━━━━━

option b

Answer 2

Answer:

correct answer is option B

Explanation:

∵ In 10 min, the number of H^2 disappears =6×10^−2

∴ In 0.3 min, the number of moles of H^2 disappear= (6×10^−2 ×(0.3))/10

​=1.8×10^−3

N2 + 3H2 ⇌ 2NH3

​⇒ 1/3[ Rate of disappearance of H2]

= 1/2 [ Rate of formation of NH3]

∴ Rate of formation of NH3  = 2/3×(1.8×10^−3)

=1.2×10^−3 mol NH3

​∴1.2×10^−3 moles of NH3 are formed.