Table of Contents
- 1 What would happen to the rate of a reaction with rate law rate K NO 2 H 2 if the concentration of NO were doubled?
- 2 What would happen to the rate of the reaction with rate law rate?
- 3 Which would speed up a reaction?
- 4 What happens to the rate of reaction as the reactants get used up in a reaction?
- 5 Is the rate constant k independent of temperature?
- 6 Which is the correct formula for the rate law?
What would happen to the rate of a reaction with rate law rate K NO 2 H 2 if the concentration of NO were doubled?
The rate would quadruple.
What would happen to the rate of the reaction with rate law rate?
Rate Laws. Typically, reaction rates decrease with time because reactant concentrations decrease as reactants are converted to products. Reaction rates generally increase when reactant concentrations are increased.
What will happen to the reaction rate if the concentration of A is tripled?
If a reactant is first order, then when its concentration is doubled, the rate of the reaction doubles; if the concentration is tripled, the rate triples, etc.
What would happen to the rate of reaction?
An increase in temperature causes a rise in the energy levels of the molecules involved in the reaction, so the rate of the reaction increases. Similarly, the rate of reaction will decrease with a decrease in temperature.
Which would speed up a reaction?
Catalysts speed up chemical reactions. Only very minute quantities of the catalyst are required to produce a dramatic change in the rate of the reaction.
What happens to the rate of reaction as the reactants get used up in a reaction?
So, when a reactant gets used up, its concentration decreases, and so the total reaction rate decreases. As you can see here, more products equal less reagents (reactants), and so the reaction rate decreases.
Why are the reaction orders in the rate law the same?
In some of our examples, the reaction orders in the rate law happen to be the same as the coefficients in the chemical equation for the reaction. This is merely a coincidence and very often not the case.
How is the reaction rate related to the rate of change?
The reaction rate changes in direct proportion to the change in [O 3 ]. When [O 3] doubles from trial 1 to 2, the rate doubles; when [O 3] triples from trial 1 to 3, the rate increases also triples. Thus, the rate is directly proportional to [O 3 ], and n is equal to 1.The rate law is thus:
Is the rate constant k independent of temperature?
The rate constant k is independent of the concentration of A, B, or C, but it does vary with temperature and surface area. The exponents in a rate law describe the effects of the reactant concentrations on the reaction rate and define the reaction order. Consider a reaction for which the rate law is:
Which is the correct formula for the rate law?
The rate law: rate = k[H2O2] describes a reaction that is first order in hydrogen peroxide and first order overall.