(a) Select all of the correct statements about reaction rates from the choices b
ID: 917142 • Letter: #
Question
(a) Select all of the correct statements about reaction rates from the choices below.
The lower the rate of a reaction the longer it takes to reach completion.
As a reaction progresses its rate goes down.
Reaction rates increase as concentrations of homogeneous catalysts increase
Reaction rates are determined by reactant concentrations, temperatures, and reactant stabilities.
Reaction rate constants increase with increasing temperature.
Reaction rates increase with increasing temperature.
The rate of a slow step has more effect on the overall reaction rate than the rate of a fast step.
Explanation / Answer
The lower the rate of a reaction the longer it takes to reach completion.--------------------true
As a reaction progresses its rate goes down.------------------------------------true
Reaction rates increase as concentrations of homogeneous catalysts increase----------------------true
Reaction rates are determined by reactant concentrations, temperatures, and reactant stabilities.------------true
Reaction rate constants increase with increasing temperature.----------------------------true
Reaction rates increase with increasing temperature.-------------------------true
The rate of a slow step has more effect on the overall reaction rate than the rate of a fast step.---------------------true
because
as the time in progress ,the concentration of the reactant decreases .so the rate of the reaction is also decreses.becauce the change in concentration is less
as the temperature increases,the no.of collisons among the reactant molecules in creases.consequently more no.of reactant molecules participate in the rate if the reaction.as result the change in concentration is more.consequently the rate of reaction also increases.
rate of the reaction is measured in terms rate constant once the rate of the reaction is increases with temperature,rate constant value is also increases.
the rate of the reaction is also depends up on the slow step.to understand this
suppose a cycle factory manufactures different parts like handles ,paddles,rims,seats,breaks---etc at the rate of 500,600,50,800,400pieces per day respectively.the overall rate of production of cycle can not be more than 50 per day.,which depends up on the slowest working section of the factory.(that is production of rims)
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