Ammonia and oxygen react at high temperatures according to the equation
4NH₃(g) + 5O₂(g) 4NO(g) → + 6H₂O(g)
In an experiment, the rate of formation of NO was found to be 3.2 x 10^–3 mol L^–1 S^–1. Calculate the rate of disappearance of ammonia and the rate of formation of water.

Solution

Ammonia and oxygen react at high temperatures according to the equation
4NH₃(g) + 5O₂(g) 4NO(g) → + 6H₂O(g)

The relevant rate experessions for the given reaction are

rate = \frac{1}{4} \frac{[∆ {NH}_{3}]}{∆ t} = \frac{1}{4} \frac{∆ [NO]}{∆ t} = \frac{1}{6} \frac{∆ [H_{2} O]}{∆ t}

From the relationship between these expressions
rate of disappearance of NH₃ = rate of formation of NO

= 3.2 x 10^–3 mol L^–1 s^–1Rate of formation of water related to the rate of formation of NO as

\frac{1}{6} \frac{[∆ H_{2} O]}{∆ t} = \frac{1}{4} \frac{∆ [NO]}{∆ t}

or \frac{∆ [H_{2} O]}{∆ t} = \frac{6}{4} \frac{∆ [NO]}{∆ t} = \frac{6}{4} \times 3.2 \times 10^{- 3} mol L^{- 1} s^{- 1} = 4.8 \times 10^{- 3} mol L^{- 1} s^{- 1} .

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Chemical Kinetics

Ammonia and oxygen react at high temperatures according to the equation
4NH₃(g) + 5O₂(g) 4NO(g) → + 6H₂O(g)
In an experiment, the rate of formation of NO was found to be 3.2 x 10^–3 mol L^–1 S^–1. Calculate the rate of disappearance of ammonia and the rate of formation of water.

Some More Questions From Chemical Kinetics Chapter

The conversion of molecules X to Y follows second order kinetics. If concentration of X is increased to three times how will it affect the rate of formation of Y?

What will be the effect of temperature on rate constant?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

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Chemical Kinetics

Ammonia and oxygen react at high temperatures according to the equation4NH3(g) + 5O2(g) 4NO(g) → + 6H2O(g)In an experiment, the rate of formation of NO was found to be 3.2 x 10–3 mol L–1 S–1. Calculate the rate of disappearance of ammonia and the rate of formation of water.

Some More Questions From Chemical Kinetics Chapter

The conversion of molecules X to Y follows second order kinetics. If concentration of X is increased to three times how will it affect the rate of formation of Y?

What will be the effect of temperature on rate constant?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Ammonia and oxygen react at high temperatures according to the equation
4NH₃(g) + 5O₂(g) 4NO(g) → + 6H₂O(g)
In an experiment, the rate of formation of NO was found to be 3.2 x 10^–3 mol L^–1 S^–1. Calculate the rate of disappearance of ammonia and the rate of formation of water.