AQA A LEVEL CHEMISTRY YEAR 2 - RATE
EQUATIONS QUESTIONS WITH ANSWERS
UPDATED .
How,can,the,rate,of,reaction,be,measured,(in,general),?,,,ANS,-
The,rate,at,which,the,concentration,of,reactant,is,decreasing
The,rate,at,which,the,concentration,of,product,is,increasing
What,are,the,units,of,rate?,,,ANS,-moldm-3s-1
From,what,time,is,the,initial,rate,of,reaction,measured?,,,ANS,-t=0
What,is,a,rate,equation?,,,ANS,-
An,expression,showing,how,the,rate,of,reactions,is,linked,to,the,concentration,of,the,reactants
What,is,the,rate,equation,for,the,reaction,:
A,+,B,-->,C,,,ANS,-Rate,=,k[A]^m[B]^n
The,product,concentrations,are,included,in,the,rate,equation
True,or,False,,,ANS,-False
What,is,the,order,of,reaction,with,respect,to,a,particular,reactant?,,,ANS,-
The,power,to,which,the,reactant,is,raised,in,the,rate,equation
The,number,of,moles,of,a,reactant,is,the,power,to,which,it,is,raised,in,the,rate,equation
True,or,False,,,ANS,-False
otherwise,how,would,you,get,reactants,of,zero,order
How,do,you,calculate,the,overall,order,of,a,reaction?,,,ANS,-The,sum,of,all,the,orders,in,the,rate,equation
, What,is,the,rate,constant?,,,ANS,-k
the,proporionality,constant,which,links,the,rate,of,reaction,ot,the,cncentrations,in,the,rate,equation
If,you,double,the,concentration,of,a,reactant,of,zero,order,,what,happens,to,the,rate?,,,ANS,-
Stays,the,same
2^0,=,1
If,you,double,the,concentration,of,a,reactant,of,first,order,,what,happens,to,the,rate?,,,ANS,-Doubles
2,=,2
If,you,double,the,concentration,of,a,reactant,of,second,order,,what,happens,to,the,rate?,,,ANS,-
Quadruples,
2^2,=,4
How,do,you,determine,the,units,of,the,rate,constant?,,,ANS,-Rearrange,the,
rate,=,k[A]^m,[B]^n,
equation,with,k,as,the,subject
cancel,out,the,moldm-3
REMEMBER,THE,S^-1
Why,must,experiments,involving,rate,be,done,at,a,constant,temperature?,,,ANS,-
k,varies,with,temperature
What,does,the,graph,of,temperature,against,rate,constant,look,like?,,,ANS,-Positive,exponential
What,happens,to,the,value,of,the,rate,constant,,k,,as,temperature,increases?,,,ANS,-Increases
State,the,Arrhenius,equation,,,ANS,-k,=,Ae^(-Ea/RT)
What,do,each,of,the,letters,in,k=,Ae^(-Ea/RT),mean?,,,ANS,-k=,rate,constant
EQUATIONS QUESTIONS WITH ANSWERS
UPDATED .
How,can,the,rate,of,reaction,be,measured,(in,general),?,,,ANS,-
The,rate,at,which,the,concentration,of,reactant,is,decreasing
The,rate,at,which,the,concentration,of,product,is,increasing
What,are,the,units,of,rate?,,,ANS,-moldm-3s-1
From,what,time,is,the,initial,rate,of,reaction,measured?,,,ANS,-t=0
What,is,a,rate,equation?,,,ANS,-
An,expression,showing,how,the,rate,of,reactions,is,linked,to,the,concentration,of,the,reactants
What,is,the,rate,equation,for,the,reaction,:
A,+,B,-->,C,,,ANS,-Rate,=,k[A]^m[B]^n
The,product,concentrations,are,included,in,the,rate,equation
True,or,False,,,ANS,-False
What,is,the,order,of,reaction,with,respect,to,a,particular,reactant?,,,ANS,-
The,power,to,which,the,reactant,is,raised,in,the,rate,equation
The,number,of,moles,of,a,reactant,is,the,power,to,which,it,is,raised,in,the,rate,equation
True,or,False,,,ANS,-False
otherwise,how,would,you,get,reactants,of,zero,order
How,do,you,calculate,the,overall,order,of,a,reaction?,,,ANS,-The,sum,of,all,the,orders,in,the,rate,equation
, What,is,the,rate,constant?,,,ANS,-k
the,proporionality,constant,which,links,the,rate,of,reaction,ot,the,cncentrations,in,the,rate,equation
If,you,double,the,concentration,of,a,reactant,of,zero,order,,what,happens,to,the,rate?,,,ANS,-
Stays,the,same
2^0,=,1
If,you,double,the,concentration,of,a,reactant,of,first,order,,what,happens,to,the,rate?,,,ANS,-Doubles
2,=,2
If,you,double,the,concentration,of,a,reactant,of,second,order,,what,happens,to,the,rate?,,,ANS,-
Quadruples,
2^2,=,4
How,do,you,determine,the,units,of,the,rate,constant?,,,ANS,-Rearrange,the,
rate,=,k[A]^m,[B]^n,
equation,with,k,as,the,subject
cancel,out,the,moldm-3
REMEMBER,THE,S^-1
Why,must,experiments,involving,rate,be,done,at,a,constant,temperature?,,,ANS,-
k,varies,with,temperature
What,does,the,graph,of,temperature,against,rate,constant,look,like?,,,ANS,-Positive,exponential
What,happens,to,the,value,of,the,rate,constant,,k,,as,temperature,increases?,,,ANS,-Increases
State,the,Arrhenius,equation,,,ANS,-k,=,Ae^(-Ea/RT)
What,do,each,of,the,letters,in,k=,Ae^(-Ea/RT),mean?,,,ANS,-k=,rate,constant
