Chem 402 Cat 1 Question Paper
Chem 402 Cat 1
Course:Bachelor Of Science In Biochemistry
Institution: Egerton University question papers
Exam Year:
CHEMISTRY DEPARTMENT
Time: 1 Hr
Chem 402 CAT 1
Attempt ALL questions.
1.Using the same conductively cell, the following data was obtained.
Electrolyte(0.001M)----Resistivity (M ohms)----Resistance(ohms)------Molar conductivity(ohm-1 m2 mol-1)
Nacl A 1580 0.01264
HNO3-------------------- B
HCL-------------- 468 0.04266
NaNO3-------------- 1650 0.01210
State all the assumptions you make,complete the table for A and B(4 marks)
2.The activity coefficient of Hg2+ is 0.4112.If the effective diameter of the ion is 0.498 nm,calculate the ionic strength.(3 marks)
3.Discuss the factors that determine conductance.(6 marks
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