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Rates of Reactions - Simple

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1. Explain why the rate of a simple chemical reaction such as:
NO(g) + 1O2(g) → NO2(g)
is likely to be most rapid at the beginning of the reaction.

2. If you wish to dissolve a lump of sugar in water, give three ways you could increase the rate at which the sugar dissolves? Explain why each procedure is effective.

3. What would be the effect of an increase in temperature on the rate constant of
a) the forward reaction?
b) the reverse reaction?

4. For the reaction
CO + NO2 → CO2 + NO
the activation energy for the forward reaction is 135 kJ/mol of CO reacted.
a) Determine the heat of reaction.
b) From the data given, and the ▲Hr for the reaction, determine the activation energy for the reverse reaction.
c) Draw and label a potential energy diagram for the reaction.

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https://brainmass.com/chemistry/chemical-kinetics/rates-reactions-simple-123780

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1. Explain why the rate of a simple chemical reaction such as

NO(g) + 1O2(g) → NO2(g)

is likely to be most rapid at the beginning of the reaction.

When the reaction starts, the number of reactant molecules is more in the beginning which collide together to form the product molecules. However the number of reactant molecules decreases with time, which results into lesser collisions between the reactant molecules and hence, the rate of reaction decrease after some time.

2. If you wish to dissolve a lump of sugar in water, ...

Solution Summary

This solution answers several chemistry questions addressing rates of reaction, forward reaction, reverse reaction and potential energy.

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