26 I low will the e.m.f vary upon the addition of more water to the left hand electrode? (A) Decrease (B) Increases (C) Remain the same (D) Will rise and fall with change im temperature 27 An acid buffer can be made by mising equimolar volume of (A) HCI and NaCI (B) CH,CO,H and CII.CO-Na (C) NH.CI and NH1 CH,CO;H and NH.CI (D) 28 For the reaction X+ Y Z A series of experiments was carried out and the following results obtained Expt [X] [X] mol dm 0.4 Initial rate mol dm s 4 x 10 6 x 10-3 8x 10-3 No mol dm 0.5 2.0 0.3 3. 1.0 0.4 C.S 0.S The overall order of the reaction is (A) (D) (B) (C) 3
26 I low will the e.m.f vary upon the addition of more water to the left hand electrode? (A) Decrease (B) Increases (C) Remain the same (D) Will rise and fall with change im temperature 27 An acid buffer can be made by mising equimolar volume of (A) HCI and NaCI (B) CH,CO,H and CII.CO-Na (C) NH.CI and NH1 CH,CO;H and NH.CI (D) 28 For the reaction X+ Y Z A series of experiments was carried out and the following results obtained Expt [X] [X] mol dm 0.4 Initial rate mol dm s 4 x 10 6 x 10-3 8x 10-3 No mol dm 0.5 2.0 0.3 3. 1.0 0.4 C.S 0.S The overall order of the reaction is (A) (D) (B) (C) 3
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
Answer Q26, 27, 28
![Decrease
Increases
29
In the reaction between aqueous KI and
aqueous peroxodisulphate,S,0 ions, iron (I1)
ions can be used as a catalyst, What type of
catalysis is this?
(A)
Ag
Heterogeneous catalyst
Homogeneous catalyst
Autocatalysis
Inhibition catalysis
(B)
(C)
(D)
30 As the atomic number increases across period
Pb + 2e Pb(
"Agag) +e Ag)
The cm fof the cell is
E° = -0.13 V
3 of the periodic table
The electronegativity decreases
The electron affinity decreases
E° = +0.80
(A)
(B)
(C)
(D)
31 Which of these exist as giant molecular
24
The atomic radius decreases
(B)
+0.67 V
The e m.f of the cell can be measured by
-0.93 V
e (A)
(C)-0.67 V
25
+0.93 V
The effective nuclear charge decreases
(D)
tiSing
(A.)
(B.)
SLI UCtures
(A)
(C)
32 Which of the carbonates below are NOT
Be and Mg
C and P
(B)
(D)
N; and Ss
C and Al
a low-resistance voltmeter
a high resistant voltmeter
a galvanometer
a conductivity meter
Ilow will the em.f vary upon the additiot
(C)
(D)
decomposed by heat?
LiCO, and NazCO:
CACO, and LICO:
CACO, and K2CO;
NazCO, and K2CO,
26
(B)
of more water to the left hand electrode?
(A)
(B)
(C)
(D)
33 Arrange
the
following oxoacids in order of
Remain the same
Will rise and fall with change in
(C)
increasing acid strength
(D)
HCIO, < HBrO3< HIO:
HBrO< HCIO1<HIO.
LA)
temperature
27
An acid buffer ean be made by mixing
(6)
HIO,<HBrO, <HCIO,
(C)
(D)
34 What is the electronie confīguration of the
element chromum (Z24)
(A) (Ne]4s*3d*
(C)Arj4s'3d$
35 Given the compound potassium
hexacyanoferrate (II). The formula of the
complex ion in the compound is
(A)Fe(CN) (B)Fe(CN);
(C)Fe(CN) (D) Fe(CN),
36 The oxidation state of chromium atoni in the
compound (NH.),Cr2O, is
(A)
17 Consider the compound
cquimolar volume of
(A)
(3)
HBrO< HIO,< HCIO
HCl and NaCl
CH,CO,l and CH.CO-Na
(C)
(D)
28
NH.CI and NH1
CH,CO;H and NH.CI
For the reaction X+ Y Z
A series of experiments was carried out and the
following results obtained
(B) [Ar]4s 3d
(D)(Ar]3d°
Expt [X]
No
Initial rate
[X]
mol dm3
0.4
mol dm
0.5
2.0
mol dm's
4 x 10-3
6 x 10-3
8x 10
0.3
+4
(B)+6 (C)
+7 (D)+8
3
1.0
0.4
The overall order of the reaction is
(A) I
(D) 3
hybridisation has the carbon atom marked with
an asterisk (*) urndergone
(B)
(C)
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Transcribed Image Text:Decrease
Increases
29
In the reaction between aqueous KI and
aqueous peroxodisulphate,S,0 ions, iron (I1)
ions can be used as a catalyst, What type of
catalysis is this?
(A)
Ag
Heterogeneous catalyst
Homogeneous catalyst
Autocatalysis
Inhibition catalysis
(B)
(C)
(D)
30 As the atomic number increases across period
Pb + 2e Pb(
"Agag) +e Ag)
The cm fof the cell is
E° = -0.13 V
3 of the periodic table
The electronegativity decreases
The electron affinity decreases
E° = +0.80
(A)
(B)
(C)
(D)
31 Which of these exist as giant molecular
24
The atomic radius decreases
(B)
+0.67 V
The e m.f of the cell can be measured by
-0.93 V
e (A)
(C)-0.67 V
25
+0.93 V
The effective nuclear charge decreases
(D)
tiSing
(A.)
(B.)
SLI UCtures
(A)
(C)
32 Which of the carbonates below are NOT
Be and Mg
C and P
(B)
(D)
N; and Ss
C and Al
a low-resistance voltmeter
a high resistant voltmeter
a galvanometer
a conductivity meter
Ilow will the em.f vary upon the additiot
(C)
(D)
decomposed by heat?
LiCO, and NazCO:
CACO, and LICO:
CACO, and K2CO;
NazCO, and K2CO,
26
(B)
of more water to the left hand electrode?
(A)
(B)
(C)
(D)
33 Arrange
the
following oxoacids in order of
Remain the same
Will rise and fall with change in
(C)
increasing acid strength
(D)
HCIO, < HBrO3< HIO:
HBrO< HCIO1<HIO.
LA)
temperature
27
An acid buffer ean be made by mixing
(6)
HIO,<HBrO, <HCIO,
(C)
(D)
34 What is the electronie confīguration of the
element chromum (Z24)
(A) (Ne]4s*3d*
(C)Arj4s'3d$
35 Given the compound potassium
hexacyanoferrate (II). The formula of the
complex ion in the compound is
(A)Fe(CN) (B)Fe(CN);
(C)Fe(CN) (D) Fe(CN),
36 The oxidation state of chromium atoni in the
compound (NH.),Cr2O, is
(A)
17 Consider the compound
cquimolar volume of
(A)
(3)
HBrO< HIO,< HCIO
HCl and NaCl
CH,CO,l and CH.CO-Na
(C)
(D)
28
NH.CI and NH1
CH,CO;H and NH.CI
For the reaction X+ Y Z
A series of experiments was carried out and the
following results obtained
(B) [Ar]4s 3d
(D)(Ar]3d°
Expt [X]
No
Initial rate
[X]
mol dm3
0.4
mol dm
0.5
2.0
mol dm's
4 x 10-3
6 x 10-3
8x 10
0.3
+4
(B)+6 (C)
+7 (D)+8
3
1.0
0.4
The overall order of the reaction is
(A) I
(D) 3
hybridisation has the carbon atom marked with
an asterisk (*) urndergone
(B)
(C)
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