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Chemistry I

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Rate of reaction in terms of concentration of reactant and product can be express as.

\frac{- 1}{2} \frac{d [N_{2} O_{5}]}{dt} = \frac{+ 1}{4} = \frac{d [{NO}_{2}]}{dt} = \frac{+ d [O_{2}]}{dt}

167 Views

Why is it that the instantaneous rate of reaction does not change when a part of the reacting solution is taken out?

Instantaneous rate of reaction is change in concentration for a very small interval of time represented by

\frac{dx}{dt}

which remains almost constant even if part of solution is taken out.

593 Views

If the concentration is expressed in mol per litre and time in minutes, then write the units for the rate constant for n-th order reaction.

The units of rate constant for the nth order reaction equal to (mol L^–1)^{1 – n} min^–1.

190 Views

Express the relationship between the rate of production of water and the rate of disappearance of oxygen in the following reaction:

C_{2} H_{6} (g) + \frac{7}{2} O_{2} (g) \to 2 {CO}_{2} (g) + 3 H_{2} O (l)

The relationship between the rate of production of water and the rate of disappearance of oxygen can be express as:

Rate = + \frac{1}{3} \frac{d [H_{2} O]}{dt} = - \frac{2}{7} \frac{d [O_{2}]}{dt}

117 Views

For the hypothetical reaction:

A_{2} + 2 B_{2} \to 2 {AB}_{2},

write the rate equation in terms of the disappearance of B₂ and formation of AB_2.

Rate = $- \frac{1}{2} \frac{d [B_{2}]}{dt} = + \frac{1}{2} \frac{d [{AB}_{2}]}{dt}$

278 Views