A physician wishes to prepare a buffer solution at pH = 3.85 that efficiently resists changes in pH yet contains only small concentration of the buffering agents. which of the following weak acids together with […]
If α is dissociation constant, then the total number of moles for the reaction 2HI ⇌ H₂ + I₂ will be
Options
(a) 1 (b) 1 – α (c) 2 (d) 2 – […]
In liquid-gas equilibrium,the pressure of vapours above the liquid is constant at
Options
(a) constant temperature (b) low temperature (c) high temperature (d) none of these
Correct Answer:
constant temperature
Explanation:
No […]
The solubility of AgCl will be minimum in
Options
(a) 0.01 M CaCl₂ (b) pure water (c) 0.001 M AgNO₃ (d) 0.01 M NaCl
Correct Answer:
0.01 M CaCl₂
Explanation:
No explanation available. […]
The pH value of a 10 M solution of HCl is
Options
(a) equal to 1 (b) equal to 2 (c) less than o (d) equal to 0
Correct Answer:
less than o
The pH value of blood does not appreciably change by a small addition of an acid or a base,because the blood
Options
(a) can be easily coagulated (b) contains iron as a part […]
Which one of the following is most soluble
Options
(a) Bi₂S₃ (Ksp = 1 ˣ 10⁻⁷⁰) (b) Ag₂S (Ksp = 6 ˣ 10⁻⁵¹) (c) CuS (Ksp = 8 ˣ 10⁻³⁷) (d) MnS (Ksp […]
Which of the following is not a characteristic of equilibrium
Options
(a) Rate is equal in both directions (b) Measurable quantities are constant at equilibrium (c) Equilibrium occurs in reversible condition (d) Equilibrium […]
Ksp of CaSO₄.5H₂O is 9 ˣ 10⁻⁶, find the volume for 1g of CaSO₄ (M.wt, = 136)
Options
(a) 2.45 L (b) 5.1 L (c) 4.25 L (d) 3.2 L
Correct Answer:
2.45 […]
The equilibrium constant for mutarotation α-D Glucose ⇌ β-D Glucose is 1.8. what percentage of a form remains at equilibrium
Options
(a) 35.7 (b) 64.3 (c) 55.6 (d) 44.4
Correct Answer:
35.7
Explanation: […]
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