3.1.9 Rate equations

No description yet. This curated deck is ready for daily study.

Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

What is meant by the order of a reaction?

Back (Answer)

The power of concentration term in a rate equation

Front (Question)

What is zero order? (1)

Back (Answer)

• As the concentration of reactants changes, the rate remains the same

Front (Question)

What is first order? (1)

Back (Answer)

As the concentration of reactants changes by a factor, the rate changes by the same factor

Front (Question)

What is second order? (1)

Back (Answer)

As the concentration of reactants changes by a factor, the rate increases by that factor squared

Front (Question)

Draw a graph of zero order reaction (2)

Back (Answer)

STraight line but use quizlet or mak e your own flashcrads

Front (Question)

Draw a graph of first order reaction (2)

Back (Answer)

Positive correlation but use quizlet an dkake your flahsctrards

Front (Question)

Draw a graph of second order reaction (2)

Back (Answer)

quizlet

Front (Question)

Which reactants will not have appear in rate equation? (1)

Back (Answer)

Those that don’t have an effect on the rate of reaction (zero order)

Front (Question)

Write the general rate equation (3)

Back (Answer)

rate = k[A]^m[B]^n Rate = rate of reaction in units mol dm⁻³ s⁻¹ k = The rate constant of the reaction (discussed later) m = The order of reaction with respect to [A] n = are orders of reaction with respect to [B]

#10

Front (Question)

What is the overall order? (1)

Back (Answer)

Sum of all orders i.e. m+n

#11

Front (Question)

What is the slowest stage in a reaction mechanism called? (1)

Back (Answer)

The rate determining step

#12

Front (Question)

What is the relationship between the reaction mechanism and the rate equation? (1)

Back (Answer)

The steps up to and including the rate-determining step contain the same species as those shown in the rate equation, in the correct ratio.

#13

Front (Question)

What is the rate constant k? (1)

Back (Answer)

Relates the reactant concentrations to the rate at a particular temperature

#14

Front (Question)

What is the relationship between rate and k? (2)

Back (Answer)

• As rate increases, the value of k also increases • This relationship is described by arrhenius equation

#15

Front (Question)

State the arhenius equation

Back (Answer)

k=Ae^-Ea/RT k= Rate constant A= Arhenius constant same units as k Ea= ACtivation energy Jmol^-1 R= Gas constant= 8.31 JK^-1mol^-1 T=Temp=K

#16

Front (Question)

STate the logarithmic arrheniujs equation

Back (Answer)

In k= In A - Ea/RT

#17

Front (Question)

In graphical analysis of arrhenius equation, what is represented by the gradient?

Back (Answer)

-Ea / R

#18

Front (Question)

In graphical analysis of arrhenius equation, what is represented by the y intercept?

Back (Answer)

LnA

#19

Front (Question)

In graphical analysis of arrhenius equation, what is represented by y?

Back (Answer)

lnK

#20

Front (Question)

In graphical analysis of arrhenius equation, what is represented by x?

Back (Answer)

1/T

#21

Front (Question)

How does a concentration-time graph look like for zero order reactions? (3)

Back (Answer)

Quizlet

#22

Front (Question)

How does a concentration-time graph look like for first order reactions? (3)

Back (Answer)

QUizlet

#23

Front (Question)

How does a concentration-time graph look like for second order reactions? (3)

Back (Answer)

Quizlet

#24

Front (Question)

Factors affecting K

Back (Answer)

as Ea increases k decreases T increases K increases As rate increases K increases