The rate of decrease in n2h4 partial pressure in a closed reaction vessel form the reaction: n2h4 (g) + h2 (g) \rightarrow 2 nh3 (g) is63 torr/h. what are the rates of change of nh3 partial pressure and total pressure in the vessel.

Answer :

The rate of change of partial pressure is 126 torr/h.

The total pressure in the vessel is zero.

Explanation :

The general rate of reaction is,

Rate of reaction : It is defined as the change in the concentration of any one of the reactants or products per unit time.

The expression for rate of reaction will be :

From this we conclude that,

In the rate of reaction, A and B are the reactants and C and D are the products.

a, b, c and d are the stoichiometric coefficient of A, B, C and D respectively.

The negative sign along with the reactant terms is used simply to show that the concentration of the reactant is decreasing and positive sign along with the product terms is used simply to show that the concentration of the product is increasing.

The given rate of reaction is,

The expression for rate of reaction :

As we know that,  the partial pressure is directly proportional to the concentration. So,

Given:

As,

and,

Thus, the rate of change of partial pressure is 126 torr/h.

Now we have to calculate the total pressure in the vessel.

Thus, the total pressure in the vessel is zero.

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explanation:

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