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WorksheetsEffect of Added Electrolyte on the rate of reaction
Total questions: 17
Worksheet time: 17mins
Reaction rates can change with
temperature
use of catalyst
ionic strength
All of these
ionic strength of a solution is defined as
2 1Σ m12z12
21Σ m1z12
21Σ m12z1
21Σ m1z1
2 KI+K2S2O8→I 2 +2K2SO4 is an example of
Acid Base reaction
Redox Reaction
Complexometric reaction
Precipitation reaction
Liberated iodine is titrated with Na2S2O3 solution using (a) indicator .
I2+2Na2S2O3→2I−+Na2S4O6 in this reaction, when all the iodine has completely reacted with sodium thiosulphate and starch is added as indicator ,solution appears ______in colour
yellow
brown
blue
colourless
In this experiment the ionic strength of the solution is altered by addition of
KI
K2S2O8
KCl
Starch
Since the concentration of KI/KCL is ___________M which is much _________as compared to concentration of potassium persulphate ,hence the order of the reaction is reduced to one .
0.01M, Higher
0.01M, lower
0.4M,Higher
0.4 M,lower
In the kinetic experiment , ice is added to the conical flask while titrating the reaction mixture with sodium thiosulphate for
cooling the reaction mixture
arresting the rate of reaction
increasing the reaction rate
acting as a catalyst
How will you reduce the waste of reagents during this experiment
Which reagents can be recycled after the experiment ?
Give an example of chemical waste , non-hazardous waste ,biodegradable waste and recyclable waste during the experiment .
when 25mLof 0.01M K2S2O8 is diluted to 125 mL after mixing the two solutions, the effective concentration of K2S2O8 is ___________and is termed as initial concentration a.
0.002
0.0125
0.02
0.00125
What is the concentration of liberated iodine If 5.5 mL of 0.002N Na2S2 O3 solution is required for titration of 10 mL of the reaction mixture ?
11X 10 -4
11X 10 -3
1.01 X 10 -3
1.01 X 10 -4
For graphical determination of the rate constant for both the sets the graph of log (a-x) vs Time is plotted and and determination of K is done by using which of the following equations?
slope
slope X 2,303
slope /2,303
intercept on y axis.
addition of strong electrolyte leads to increase in rate of reaction due to
increase in concentration of KCl
decrease in ionic strength
increase in ionic strength
increase in concentration of Iodine
Increase in ionic strength is expected to increase the rate of reaction between similarly charged ions according to _________ equation.
Nernst equation
Debye-Huckel Equation
Tafel's equation
Kohlrausch's law
2 KI + K2S2O8 → I2 + 2K2 SO4 the rate of this reaction increase by addition of the strong electrolyte KCl because ions involved in the redox reaction has __________ charges and ______ ionic strength.
opposite , increase
like , decrease
opposite decrease
like, increase
