For 2SO2 + O2 ⇔ 2SO3 in 1 dm³ and 2 dm³ vessel, ratio of velocities?
Anonymous Quiz
18%
1:8
50%
1:4
26%
4:1
6%
8:1
2N2O5 → 4NO2 + O2, NO2 increases 5.2x10^-3 M in 100 s. Rate of reaction?
Anonymous Quiz
23%
1.3x10^-5 M/s
47%
0.5x10^-4 M/s
22%
7.6x10^-4 M/s
7%
2x10^-3 M/s
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Cl2 + 2I- → I2 + 2Cl-, [I-] changes 0.20→0.18 mol/L in 20 min. Rate of I2 formation?
Anonymous Quiz
19%
1x10^-4
52%
5x10^-4
24%
1x10^-3
4%
5x10^-3
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3A → 2B, rate + d[B]/dt equals?
Anonymous Quiz
25%
-1/3 d[A]/dt
44%
-2/3 d[A]/dt
15%
+2 d[A]/dt
16%
-3/2 d[A]/dt
Which factor has no influence on rate of reaction?
Anonymous Quiz
37%
Molecularity
26%
Temperature
14%
Concentration
23%
Nature of reactant
Haber process, 60 moles NH3 in 1 hr. Rate of disappearance of N2?
Anonymous Quiz
29%
30 mol/min
35%
6 mol/min
29%
0.5 mol/min
6%
60 mol/min
Order of reaction is decided by?
Anonymous Quiz
38%
Molecularity
16%
Pressure
15%
Temperature
31%
Mechanism & relative concentrations
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Cow milk, an example of natural emulsion, is stabilized by:
Anonymous Quiz
31%
Fat
18%
Water
30%
Casein
21%
Mg2+ ion
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All colloidal dispersions have:
Anonymous Quiz
29%
Low osmotic pressure
30%
No osmotic pressure
33%
High osmotic pressure
8%
Very high osmotic pressure
Lyophilic sols are more stable than lyophobic sols because:
Anonymous Quiz
22%
The colloidal particles have negative charge
48%
The colloidal particles have positive charge
25%
The colloidal particles are solvated
5%
None of the above
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When a beam of light is passed through a colloidal solution it:
Anonymous Quiz
17%
Is reflected
57%
Is scattered
17%
Transmitted
9%
Absorbed
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Which of the following will be the most effective in the coagulation of Fe(OH)3 sol?
Anonymous Quiz
30%
Mg3(PO4)2
40%
BaCl2
22%
NaCl
8%
KCN
Four different colloids have the following gold number, which one has most effective action?
Anonymous Quiz
17%
5
48%
10
28%
15
6%
13
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