Question

Consider a mixture of gas molecule of types A, B and C having masses m_A < m_B < m_C ratio of their root mean square speeds at normal temperature and pressure is ______.

Options

• ν_A = ν_B ≠ ν_C

• `1/ν_A > 1/ν_B > 1/ν_C`

• ν_A = ν_B = ν_C = 0

• `1/ν_A < 1/ν_B < 1/ν_C`

Answer 1

Consider a mixture of gas molecule of types A, B and C having masses m_A < m_B < m_C ratio of their root mean square speeds at normal temperature and pressure is `underlinebb(1/ν_A < 1/ν_B < 1/ν_C)`.

Explanation:

Root mean square speed v_rms = `sqrt((3RT)/M)`

M_A < M_B < M_C

So, ν_A > ν_B > ν_C

Hence, `1/ν_A < 1/ν_B < 1/ν_C`