AP EAMCET · Chemistry · States of Matter
If \(r_1, r_2\) and \(r_3\) represent the most probable speeds of three different gases at the same temperature as shown in figure with molar masses \(M_1, M_2\) and \(M_3\) respectively. The correct order of molar masses of these gases is
- A \(M_1>M_3>M_2\)
- B \(M_3>M_2>M_1\)
- C \(M_2>M_1>M_3\)
- D \(M_2>M_3>M_1\)
Answer & Solution
Correct Answer
(C) \(M_2>M_1>M_3\)
Step-by-step Solution
Detailed explanation
In the direction of \(x\)-axis \(r_3\) increases and for same temperature most probable speed \[ \propto \frac{1}{\sqrt{\text { molar mass }(M)}} \] Thus, \(M_2>M_1>M_3\).
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