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What is salt hydrolysis ? Explain hydrolysis of salts of:
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1
|
5125
|
August 12, 2016
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Define lewis Acids and bases with example, (b) The values of Ks„ of two sparingly soluble salts
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0
|
1297
|
August 12, 2016
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An organic Base X has ${{K}_{b}}$, equal to 1 X ${{10}^{-8}}$. In what amount should .01M HQ and .01M solution of Xbe mixed to prepare 1 litre of a buffer solution having pH 7?
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0
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546
|
August 12, 2016
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Calculate the pH of a solution obtained by mixing 50 ml of 0.1M NaOH with 100 ml of 0.1M
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0
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3734
|
August 12, 2016
|
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Calculate the pH of a solution obtained by mixing of 100 ml of 0.1 M HCl and 100 ml of 0.2 M
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0
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6849
|
August 12, 2016
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How much volume of 0.2 M solution of acetic acid should be added to 100 ml of 0.2 M solution of sodium acetate to prepare a Buffer solution of pH 5. pK„ for acetic acid is 4.74?
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0
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4339
|
August 12, 2016
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What should be the ratio of concentrations of formate ion and formic add in a buffer solution so that its pH should be 4 ? Around what pH will this buffer have maximum buffer capacity ? K„ = 1.8 x ${{10}^{-4}}$?
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0
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1267
|
August 12, 2016
|
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Calculate the pH of a solution which is 0.1M in HA and 0.5 M in NaA. K„ for HA is 1.8 X ${{10}^{-6}}$?
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0
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2565
|
August 12, 2016
|
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If 35.0 c${{m}^{3}}$ of 0-050 M Ba(N${{({{O}_{3}})}_{2}}$) are mixed with 25.0 c${{m}^{3}}$ of 0.020 M NaF, will any Ba${{F}_{2}}$ precipitate of Ba${{F}_{2}}$ is 1.7 x ${{10}^{-6}}$ at 298 K
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0
|
587
|
August 12, 2016
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What is the maximum concentration of equimolar solutions of ferrous sulphate and sodium sulphide so that when mixed in equal volumes, there is no precipitation of iron sulphide ? (For iron sulphide K= 6.3 X${{10}^{-8}}$ )
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0
|
1847
|
August 12, 2016
|
|
What is the minimum volume of water required to dissolve 1g?
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0
|
1080
|
August 12, 2016
|
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The ionization constant of chloroacetic acid is 1.35 x ${{10}^{-3}}$. What will be the pH of 0.1 M add and its 0.1M sodium salt solution?
|
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0
|
3654
|
August 12, 2016
|
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A 0.02 M solution of pyridinium hydrochloric has pH = 3.44. Calculate the ionization constant of pyridine
|
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0
|
5066
|
August 12, 2016
|
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Calculate the concentrations of strontium and hydroxyl ions
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|
1
|
527
|
August 12, 2016
|
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The equilibrium constant for the following reaction is 1.6 X 1${{10}_{5}}$ at 1024 K
|
|
1
|
3223
|
August 12, 2016
|
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Calculate ${{K}_{c}}$ for this reaction at the above temperature?
|
|
1
|
572
|
August 12, 2016
|
|
(a) What happens when HCl gas is passed through the saturated solution of NaCl?
|
|
1
|
3839
|
August 12, 2016
|
|
Equal volumes of 0.002 m solutions of sodium iodate and cupric chlorate are mixed together will it lead to precipitation of copper iodate. ${{K}_{cp}}$ = 7.4 x ${{10}_{-8}}$
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0
|
4815
|
August 12, 2016
|
|
Calculate the ratio of molarities
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|
1
|
527
|
August 12, 2016
|
|
Account for the following:
|
|
1
|
576
|
August 12, 2016
|
|
Predict if the solution of the following salts are neutral, acidic or basic?
|
|
1
|
1439
|
August 12, 2016
|
|
Give examples of Acidic and Basic Buffers?
|
|
0
|
1085
|
August 12, 2016
|
|
What is the effect of increase of temperature on the pH of a Buffer solution?
|
|
0
|
614
|
August 12, 2016
|
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What happens to the pH of Buffer solution on dilution?
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|
0
|
548
|
August 12, 2016
|
|
(a) The reaction quotient of a reversible reaction is Q. and the equilibrium constant is K .What do you conclude from the reaction if <Kp?
|
|
1
|
865
|
August 12, 2016
|
|
The ionization constant of acetic add is 1.74 x${{10}^{-5}}$ . Calculate the degree of dissociation of acetic add in its 0.05 M solution. Calculate the concentration of acetate in the solution and its pH
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|
0
|
2731
|
August 12, 2016
|
|
(a)State Le-Chatelier's principle
|
|
1
|
4680
|
August 12, 2016
|
|
Find the pH of the following solutions:
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|
1
|
1186
|
August 12, 2016
|
|
If 0-561 g of KOH is dissolved in water to give 200 mL of solution at 298 K. Calculate the concentrations of potassium, hydrogen and hydroxyl ions. What is its pH?
|
|
0
|
2725
|
August 12, 2016
|
|
The ionisation constant of HF, HCOOH and HCN at 298 K are 6.8 x${10}^{-4}}$, 1-8 X${{10}^{-4}}$ and 4.8 x ${{10}^{-9}}$ respectively. Calculate the ionization constants of the corresponding conjugate bases?
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0
|
3237
|
August 12, 2016
|