1.As a chemical reaction proceeds, the rate of the reaction tends to: a. increas
ID: 838826 • Letter: 1
Question
1.As a chemical reaction proceeds, the rate of the reaction tends to:
a. increase. b. decrease. c. remain constant. d. oscillate.
2.If tripling the concentration of reactant A multiplies the initial rate of the reaction by nine, the reaction is _______ order in A.
a. zeroth b. first c. second d. third
3 A + B - C + D Rate = k[A][B] The overall order of this reaction is:
a. first. b. second. c. third. d. fourth.
4. W + X --Y + Z Rate = k[W] The order of this reaction with respect to X is:
a. zeroth. b. first. c. second. d. third.
Explanation / Answer
1)b
as the reaction proceeds the concentration of reactants decreases so rate of reaction decreases
2)c
R=K[A]^N
9R=K[3A]^N
=> 9=3^N
=>N=2
3)b
GIVEN
R=K[A][B]
ORDER= sum of the powers A,B = 1+1 =2
4)a
since rate only depends on concentration of W so rate w.r.t X is zero.
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