(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 |
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 |
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 × 10–2
2. = 1.63 × 10–4
3. = 1.63 × 10–2
4. = 0.05 × 10–2
The salt that gives a neutral solution in water is:
1. KBr
2. NH4NO3
3. NaCN
4. Rb2(CO3)
The ionization constant of benzoic acid is 6.46×105 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
The equilibrium constant Kc expression for the above mentioned reaction is:
1. | \(\mathrm{K_{C} = \dfrac{\left[IF_{5}\right]^{2}}{\left[F_{2}\right]^{5}}}\) | 2. | \(\mathrm{K_{C} = \dfrac{\left[IF_{5}\right]^{2}}{\left[F_{2}\right]^{5} \left[I_{2}\right]}}\) |
3. | \(\mathrm{K_{C} = \dfrac{\left[F_{2}\right]^{5} \left[I_{2}\right]}{\left[IF_{2}\right]^{2}}}\) | 4. | \(\mathrm{K_{C} = \dfrac{\left[F_{2}\right]^{5}}{\left[IF_{5}\right]^{2}}}\) |
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 |
The species that can act as Bronsted acids as well as bases is/are:
1.
2.
3.
4. All of the above.
The solubility product of silver chromate is . The solubility of silver chromate will be:
1.
2.
3.
4.
The solubility product of mercurous iodide is . The solubility of mercurous iodide will be:
1.
2.
3.
4.