The ionization constant of acetic acid is 1.74 × 10–5. The pH of acetic acid in its 0.05 M solution will be:
1. | 7.81
|
2. | 3.03
|
3. | 8.54
|
4. | 1.45 |
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(a) Human muscle-fluid, pH =6.83
(b) Human stomach fluid, pH = 1.2
(c) Human blood, pH= 7.38
(d) Human saliva, pH =6.4.
Out of the above mentioned biological fluids, the one with the minimum concentration of hydrogen ions is:
1. | Human blood | 2. | Human muscle fluid |
3. | Human stomach fluid | 4. | Human saliva |
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The pH values of milk, tomato juice, lemon juice, and egg are 6.8, 4.2, 2.2, and 7.8 respectively.
The corresponding hydrogen ion concentration is maximum in:
1. | Lemon juice
|
2. | Milk
|
3. | Egg white
|
4. | Tomato juice |
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The ionization constant of propanoic acid is 1.32 × 10–5. The degree of ionization of 0.05M acid solution will be:
1. = 0.63 x 10-2
2. = 1.63 x 10-4
3. = 1.63 x 10-2
4. = 0.05 x 10-2
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The salt that gives a neutral solution in water is:
1. KBr
2. NH4NO3
3. NaCN
4. Rb2(CO3)
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The ionization constant of benzoic acid is 6.46×10–5 and Ksp for silver benzoate is 2.5×10–13. Silver benzoate is x times more soluble in a buffer of pH 3.19 compared to its solubility in pure water. The value of x will be:
1. 6.8
2. 16.8
3. 33.3
4. 3.3
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The equilibrium constant Kc expression for the above mentioned reaction is:
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The solution that has the lowest pH is:
(assuming 100% dissociation)
1. | 0.003 M HCl | 2. | 0.005 M NaOH |
3. | 0.002 M HBr | 4. | 0.002 M KOH |
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The species that can act as Bronsted acids as well as bases is/are:
1.
2.
3.
4. All of the above.
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The solubility product of silver chromate is . The solubility of silver chromate will be:
1.
2.
3.
4.
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