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Question

The scientist "Q" was experimenting to revive a giant called the Mountain. He accidentally dropped a vial of ammonia on the ground. He saw ammonia react with oxygen and produce NO and water.

Let's say the rate of formation of NO is 3.6 x 10-3 Ms1

Calculate


A
3.6 x 10-3 Ms1 and 3.6 x 10-3 Ms1
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B
9 x 10-3 Ms1 and 5.4 x 10-3 Ms1
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C
7.2 x 10-3 Ms1 and 3.6 x 10-3 Ms1
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D
3.6 x 10-3 Ms1 and 5.4 x 10-3 Ms1
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Solution

The correct option is D 3.6 x 10-3 Ms1 and 5.4 x 10-3 Ms1
The reaction goes as follows:

4NH3+5O24NO+6H2O

From this we can write the rate equation as follows

R = 14Δ[NH3]Δt=15Δ[O2]Δt=14Δ[NO]Δt=16Δ[H2O]Δt

Let us try to get the terms we need.

We are given, Δ[NO]Δt

which is the rate for formation of NO. We need the rate of disapperance of ammonia.

We know that

Δ[NO]Δt=Δ[NH3]Δt

Δ[NH3]Δt=3.6 x 103 M/s

Similarly,

Δ[H2O]Δt=64 Δ[NH3]Δt=32 Δ[NH3]Δt=5.4 x 103 M/s


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