Show all working explaining detailly your solution.Answer Q82, 83 & 84 Questions 77-81.The following are some instruments used to followup the rale of reaction.A. SpectrophotometerB. ManometerB. PolarimeterD. None of the aboveQuestions 68 - 71.The following are some types of catalysis mostoften used to alter rates of chemical reactions.A Heterogeneous calalysis.B. AutocatalysisC. Homogeneous catalysisD. Inhibition catalysis.Select from Ato Dthe instrument that can be usedto follow-up the rate of the reaclion.77. CH(9) + Br(aq) CHBR (aq)78. 20.(g) -- 30 (g)79. NO2(g) + c09g) NO(g) + CO2(g)80 H2(g) + F2(g)81C H O (aq)+H O(1)>C,H,0,(aq)fC,H O (ag)Select from the list A to D the ype of calalysis thatthe underlined substance is in the followingraaction.68 Alumina alters the rate of dehydration ofethanol to ethene.69. manganese (II) ions alters the rate of thereaction2HF(g)glucosefructose2MNO (aq)+6H (aq)+5H.0(aq) >2Mn (aq)+50 (g)+8H,0().as soon as a trace amounl of manganese(I1) ions appear in the reaction medium.70. Hydrogen ions alter the rate of the reactionbetween iodine and propenone.71. fron (II) ions alter the rate of the reactionbetween iodide ions and peroxodisulphatefons.sucroseQuestions 82 - 89 concern the graphs below.Questions 72 - 76.The following are some terms used in reactionkinelics.A. Rate determining stepB. MolecularityC. Order of reaction.D. Elementary reactions.Select from A-D the term that most suits72. a sequence of individual step(s) whichtogether make up the proposed reactionmechanism.73. the number of reacting species that take partSelect the graph which represents a plot of82. the half-life (y-axis) against concentration fora first order reaction.in a reaction step.74 the number to which the concentrations ofreactants are raised in the rate expression.75. the reaction steps that limits how fast theoverali reaction proceeds.The step in the reaction mechanism whoserate law is identical to the rate law of the83.the rate of react(y-axis) againstconcentration for a zero order reaction.84. the half-life (y-axis) against concentration fora zero order reaction.85. the concentration (y-axis) against time forzero order reaction.86. the rate constant (k) (y-axis) against theabsolube temperature.87. the In of rate constant (y-axis) against theinverse of the absolute temperature.88. the rate of reaction (y-axis) agains!concertration for a second order reaction89. the rate of reaction (y-axis) againstconcentration for a second Grder eaction.76overal reaction.166

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Science

Chemistry

Show all working explaining detailly your solution. Answer Q82, 83 & 84

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter11: Chemical Kinetics

Section: Chapter Questions

Problem 11.50PAE

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Question

Show all working explaining detailly your solution.

Answer Q82, 83 & 84

Questions 77-81.
The following are some instruments used to follow
up the rale of reaction.
A. Spectrophotometer
B. Manometer
B. Polarimeter
D. None of the above
Questions 68 - 71.
The following are some types of catalysis most
often used to alter rates of chemical reactions.
A Heterogeneous calalysis.
B. Autocatalysis
C. Homogeneous catalysis
D. Inhibition catalysis.
Select from Ato Dthe instrument that can be used
to follow-up the rate of the reaclion.
77. CH(9) + Br(aq) CHBR (aq)
78. 20.(g) -- 30 (g)
79. NO2(g) + c09g) NO(g) + CO2(g)
80 H2(g) + F2(g)
81C H O (aq)+H O(1)>C,H,0,(aq)fC,H O (ag)
Select from the list A to D the ype of calalysis that
the underlined substance is in the following
raaction.
68 Alumina alters the rate of dehydration of
ethanol to ethene.
69. manganese (II) ions alters the rate of the
reaction
2HF(g)
glucose
fructose
2MNO (aq)+6H (aq)+5H.0(aq) >
2Mn (aq)+50 (g)+8H,0().
as soon as a trace amounl of manganese
(I1) ions appear in the reaction medium.
70. Hydrogen ions alter the rate of the reaction
between iodine and propenone.
71. fron (II) ions alter the rate of the reaction
between iodide ions and peroxodisulphate
fons.
sucrose
Questions 82 - 89 concern the graphs below.
Questions 72 - 76.
The following are some terms used in reaction
kinelics.
A. Rate determining step
B. Molecularity
C. Order of reaction.
D. Elementary reactions.
Select from A-D the term that most suits
72. a sequence of individual step(s) which
together make up the proposed reaction
mechanism.
73. the number of reacting species that take part
Select the graph which represents a plot of
82. the half-life (y-axis) against concentration for
a first order reaction.
in a reaction step.
74 the number to which the concentrations of
reactants are raised in the rate expression.
75. the reaction steps that limits how fast the
overali reaction proceeds.
The step in the reaction mechanism whose
rate law is identical to the rate law of the
83.
the rate of react
(y-axis) against
concentration for a zero order reaction.
84. the half-life (y-axis) against concentration for
a zero order reaction.
85. the concentration (y-axis) against time for
zero order reaction.
86. the rate constant (k) (y-axis) against the
absolube temperature.
87. the In of rate constant (y-axis) against the
inverse of the absolute temperature.
88. the rate of reaction (y-axis) agains!
concertration for a second order reaction
89. the rate of reaction (y-axis) against
concentration for a second Grder eaction.
76
overal reaction.
166

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Reaction Conc. Na2S½O3 Conc. HCI A Abs. A Time (s) Rate (A Abs./ga Time) 1.007568 0.300349 0.01870913 0.02870913 1 0.10 M .30 М 1.3686611 1.358380874 0.10 M .15 M 1.5360817 5.114311671 3 0.050 M .30 M 1.2267196 65.56796601 4 0.025 M .30 M 0.9563164 11.3085840 4. Use experimental data and the rate law to calculate a rate constant for each reaction 1, 2, 3, 4. How do the rate constants compare? Should they be the same or different? Discuss in your conclusions. Report the average value of your calculations. Be sure to include units in your rate constant. The rate law of the reaction is shown below: Rate = [Na2S2O3]-2