North Maharashtra University 2009 B.Sc Chemistry Stoichiometric Calculation - Question Paper

S.Y.B.Sc.-Paper-CH-212
First Term Q.B. (Analytical Chemistry)

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ques. of 2 marks every.
1) describe the term Atomic weight. provide example.
2) describe the term Equivalent weight. provide example.
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3) describe the term Molecular weight. provide example.
4) describe the term Formula weight. provide example.
5) describe the term Dalton. provide its example.
6) describe the term Mole. provide example.
7) describe the term Normality. provide example.
8) describe the term Molarity. provide example.
9) describe the term Molality. provide example.
10) describe the term Formality. provide example.
11) describe the term Primary standard substance.
12) describe the term Standard solution.
13) provide any 2 examples of primary standard substance.
14) provide any 2 example of secondary standard.

ques. of 3 marks every.
1) How the equivalent weight is computed in various acids. provide example.
2) How the equivalent weight is computed in various Bases. provide example.
3) How the equivalent weight is computed in various Oxidising and reducing
agents. provide example.
4) provide the requirement of primary standard substance.
5) discuss the calibration of pipette.
6) discuss the calibration of volumetric flask.
7) discuss the calibration of Burette.
8) How many gram atoms are current in 160 gram of sulphur?
9) How many moles of CaCO3 current in 250 gram of CaCO3.
10) How will you prepare the 250 ml of 0.1 N NaOH solutions?
(Molecular weight of NaOH=40 gram).
11) How will you prepare the 100 ml of 0.1 N AgNO3 solutions.
(Molecular weight of AgNO3 =169.07 gram).
12) How will you prepare the 250 ml of 0.1 M H2SO4 solution.
(Molecular weight of H2SO4 =98 gram).



ques. of 4 marks every.

1) explain the requirement of primary standard substance. provide example.
2) What do you mean by primary standard substance and secondary
standard substance. provide 1 example of every.
3) elaborate the requirement of volumetric titration (analysis).
4) describe volumetric analysis. elaborate the various kinds of volumetric
analysis?
5) How many grams of KOH is require red to prepare 0.25 N 500 ml solution
of it.
(Molecular weight of KOH-56 gram).
6) How many grams of Oxalic acid is current in 0.5 N 250 ml solution of it.
(Equivalent weight of Oxalic acid -63 gram).
7) How many grams of Na2CO3 is current in 0.2 N 100 ml solution of it.
(Molecular weight of Na2CO3 =106 gram).
8) How many gram of KMnO4 current in 0.1 N 250 ml solution of it.
(Equivalent weight of KMnO4=31.6 gram).
9) How will you prepare 0.025 N 500 ml solution of HCl from 0.1 N HCl
solutions?
10) How will you prepare 0.05 N 500 ml solution of NaOH from 0.5 N NaOH
solutions?
11) What will be the normality of 500 ml H2SO4 solution prepared from 0.2 N
250 ml solutions?
12) How many ml of 12 N HCl solutions is needed for preparation of 250 ml
N/10 HCl solution?
13) How many ml of 0.25 M solution of H2SO4 will react with 10 ml of 0.25M
solution of NaOH?
14) How many gram of FeSO4 are current in 1 litre of two N, 0.4 N.
(Equivalent weight of FeSO4= 151.896 gram).
15) How many gram of K2Cr2O7 are current in 500 ml of 0.5 N.
(Equivalent weight of K2Cr2O7= 49.032 gram).
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16) compute the volume corresponds to 0.5 mole/litre of NaHCO3
substance.
17) What is the normality of solution containing 15 gram of Na2CO3 in 200 ml
solution.
18) compute the molality of a solution which contain 25 gram of KCl per
1000gram of solvent.

ques. of 6 marks every.

1) explain molarity and normality to express the concentration of solution.
2) What do you mean by primary standard substance and secondary
standard? discuss the requirement of primary standard substance.
3) explain the calibration of volumetric flask and Pipette.
4) explain the calibration of volumetric flask and Burette.
5) explain the calibration of Burette and Pipette.
6) elaborate the various kinds of volumetric analysis? discuss in brief.
7) What is titrimetric analysis? provide the requirement of titrimetric analysis.

Earning:   Approval pending.