Rate of Chemical Reactions
Chemistry ⇒ Chemical Kinetics and Equilibrium
Rate of Chemical Reactions starts at 10 and continues till grade 12.
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A reaction has a rate law: Rate = k[A][B]^2. If the concentration of B is doubled, by what factor does the rate increase?
A reaction has the rate law Rate = k[A][B]. If [A] = 0.1 mol L-1, [B] = 0.2 mol L-1, and k = 2 L mol-1 s-1, calculate the rate.
A reaction has the rate law Rate = k[A]^2. If the rate constant k = 0.5 L mol-1 s-1 and [A] = 0.2 mol L-1, calculate the rate.
A reaction is first order in A and zero order in B. If [A] is doubled and [B] is tripled, by what factor does the rate change?
Describe how a catalyst affects the rate of a chemical reaction.
Describe how pressure affects the rate of a reaction involving gases.
Describe the difference between average rate and instantaneous rate of a reaction.
Explain the term 'rate-determining step' in a reaction mechanism.
Explain why increasing the surface area of a solid reactant increases the rate of reaction.
Explain why reactions between ions in aqueous solution are usually very fast.
Explain why the rate of a reaction generally decreases as the reaction proceeds.
For a reaction, doubling the concentration of reactant A increases the rate by a factor of 4. What is the order of the reaction with respect to A?
For the reaction 2A + B → C, the rate of disappearance of A is 0.04 mol L-1 s-1. What is the rate of disappearance of B?
For the reaction 2NO2 → 2NO + O2, if the rate of formation of O2 is 0.1 mol L-1 s-1, what is the rate of disappearance of NO2?
If the rate of formation of product P in a reaction is 0.01 mol L-1 s-1, what is the rate of disappearance of reactant R if the stoichiometry is R → 2P?
State the effect of a catalyst on the equilibrium position of a reversible reaction.
State the effect of increasing temperature on the rate constant of a reaction.
State the units of the rate constant for a second-order reaction.
The decomposition of hydrogen peroxide is catalyzed by manganese dioxide. What role does manganese dioxide play in this reaction?
The rate law for a reaction is given as Rate = k[A]^2[B]. What is the order of the reaction with respect to A?
