A buffer solution contains 0.1 M of acetic acid and 0.1 M of sodium acetate.
A buffer solution contains 0.1 M of acetic acid and 0.1 M of sodium acetate.What will be its pH? (pKa of acetic acid is 4.75)
Options
(a) 5 (b) 4 (c) 5.25 (d) […]
Questions
The law of equilibrium was first given by
The law of equilibrium was first given by
Options
(a) Boyle (b) Goldberg (c) Waage (d) both (Goldberg) and (Waage)
Correct Answer:
both (Goldberg) and (Waage)
Explanation:
No explanation available. Be the first […]
Which of the following is a Lewis acid
Which of the following is a Lewis acid
Options
(a) Br⁻ (b) Cl⁻ (c) S⁻ (d) Ag⁺
Correct Answer:
Ag⁺
Explanation:
No explanation available. Be the first to write the explanation for this […]
Which of the following is a Lewis acid
Which of the following is a Lewis acid
Options
(a) Cl⁻ (b) H₃O⁺ (c) BF₃ (d) C₂H₅OH
Correct Answer:
BF₃
Explanation:
No explanation available. Be the first to write the explanation for this […]
100 mL of HCl + 35 mL of NaOH, colour of methyl orange in the solution will be
100 mL of HCl + 35 mL of NaOH, colour of methyl orange in the solution will be
Options
(a) red (b) yellow (c) can’t be predicted (d) methyl orange is not a […]
For a reaction, 2NOCl(g) + Cl₂(g) , Kc at 427⁰C is 3 ˣ 10⁻⁶ L.mol⁻¹.
For a reaction, 2NOCl(g) + Cl₂(g) , Kc at 427⁰C is 3 ˣ 10⁻⁶ L.mol⁻¹.The value of Kp is nearly
Options
(a) 7.50 ˣ 10⁻⁵ (b) 2.50 ˣ 10⁻⁵ (c) 2.50 ˣ 10⁻⁴ […]
In an equilibrium reaction, if temperature increases
In an equilibrium reaction, if temperature increases
Options
(a) equilibrium constant increases (b) equilibrium constant decreases (c) any of the above (d) no effect
Correct Answer:
any of the above
Explanation:
No explanation […]
Which radiations are used in tratement of muscles ache?
Which radiations are used in tratement of muscles ache?
Options
(a) Ultraviolet (b) Infrared (c) Microwave (d) x-rays
Correct Answer:
Infrared
Explanation:
Infrared rays are used in physical therapy.
An electromagnetic wave of frequency v = 3.0 MHz passes from vacuum into
An electromagnetic wave of frequency v = 3.0 MHz passes from vacuum into a dielectric medium with relative permittivity ε = 4.0. Then
Options
(a) wavelength is doubled and frequency is unchanged (b) […]
The ratio of amplitude of magnetic field to the amplitude of electric field for
The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagating in vacuum is equal to:
Options
(a) The speed of light in vacuum (b) reciprocal […]