DIRECTIONS SUMMARISED FIRST SECOND STATEMENT A. TRUE STATEMENT TRUE Second staterment is a CORRECT explanation of the first Second statement is NOT a correct explanation of the first B TRUE C TRUE D. FALSE TRUE FALSE TRUE FIRST STATEMENT SECOND STATEMENT The catalyst provides a surface for reactants to be absorbed. 117. A catalysed reaction has a lower activation energy than an uncatalysed reaction. 118. At the transition state existing bonds in reacting molecules are stretched. The kinetic energy of colliding molecules is converted into potential energy at the transition state. 119. Titration technique cannot be used to monitor the rate of alkaline hydrolysis of an ester. Aliquates portions of the esterlaikaline mixture can be quenched by using ice-cold water.
DIRECTIONS SUMMARISED FIRST SECOND STATEMENT A. TRUE STATEMENT TRUE Second staterment is a CORRECT explanation of the first Second statement is NOT a correct explanation of the first B TRUE C TRUE D. FALSE TRUE FALSE TRUE FIRST STATEMENT SECOND STATEMENT The catalyst provides a surface for reactants to be absorbed. 117. A catalysed reaction has a lower activation energy than an uncatalysed reaction. 118. At the transition state existing bonds in reacting molecules are stretched. The kinetic energy of colliding molecules is converted into potential energy at the transition state. 119. Titration technique cannot be used to monitor the rate of alkaline hydrolysis of an ester. Aliquates portions of the esterlaikaline mixture can be quenched by using ice-cold water.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Show all working explaining detailly your solution.
Answer Q 117 , 118 & 119
Transcribed Image Text:DIRECTIONS SUMMARISED
FIRST
STATEMENT
A. TRUE
B TRUE
C TRUE
D. FALSE
SECOND
STATEMENT
TRUE
Second statement is a CORRECT explanation of the first
Second statement is NOT a correct explanation of the first
TRUE
FALSE
TRUE
FIRST STATEMENT
SECOND STATEMENT
The catalyst provides a surface for reactants
to be absorbed.
117. A catalysed reaction has a lower activation
energy than an uncatalysed reaction.
118. At the transition state existing bonds in
reacting molecules are stretched.
The kinetic energy of colliding molecules is
converted into potential energy at the
transition state.
119. Titration technique cannot be used to
monitor the rate of alkaline hydrolysis of an
Aliquates portions of the esterlaikaline
mixture can be quenched by using ice-cold
ester.
water,
120. Spectrometric methods can be used to
follow-up the rate of the reaction.
Nitrogen dioxide formed is the only coloured
product in the reaction
NO(g) + 0 (g) 0,(g) + NO,(g)
NO(g) + 0,(g)
0,(g) + NO,(g)
121. Half life of a first order reaction is
independent of its initial concentration.
Concentration changes do not affect rates
of first order reactions.
122. The sequence of elementary reactions of
a chemical reaction is the molecularity of
the reaction.
A bimolecular reaction is one that involves
two reactants at the rate determining step.
123. The rate constant of a reaction decreases
as the reaction proceeds.
The concentration of the reactants decreases
as the reaction proceeds.
Concentration of reactants are highest at the
start of the reaction.
124. The initial rate of a reaction is its highest
rate.
125. Reacting molecules acquire more
activation energy at higher temperatures
126. The rate of the reaction
Increase in temperature increases rate of
reaction.
Manometric methods can onty be used to
NOBR,(g) + NO(g)
can be determined from the change in
2NOBr(g)
follow up rate of reactions that involve a
change in the number of moles of the gases
involved.
pressure.
127, A reaction wnose rate is multiplied by
Order of reaction can be obtained
th when the concentration is halved is
experimetally or graphically.
a third order reaction.
770
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