Which of the following molecules has the largest root mean square velocity at 25°C

Which of the following molecules has the largest root mean square velocity at 25°C

Options

(a) NH₃
(b) SO₂
(c) H₂S
(d) CO₂

Correct Answer:

NH₃

Explanation:

Temperature= 25⁰C, R.M.S velocity (ν r.m.s) = √(3RT / M ) ∝ √(1/M) .
(where M is molecular weight). We also known that molecular weights of SO₂, CO₂, NH₃, H₂S are 64 , 44 , 17 , 34 respectively .Therefore NH₃ molecule has the largest root mean square velocity, because of the least molecular weight.

admin:

Related Questions

  1. The number of atoms per unit cell of bcc structure is
  2. Nitromethane reacts with chlorine in the presence of a base to give
  3. Which one of the following statements is incorrect with regard to ortho and para
  4. If a neutral atoms is converted into a cation, then its
  5. Aspirin is obtained by the reaction of salicylic acid with