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  • When rms speed of Hydrogen molecules at 273K is 180m/sec. Find the  speed for oxygen molecule at 273

When rms speed of Hydrogen molecules at 273K is 180m/sec. Find the v_{rms} speed for oxygen molecule at 273K

Option: 1

95m/sec


Option: 2

30m/sec


Option: 3

45m/sec


Option: 4

25m/sec


Answers (1)

best_answer

$$ \\V_{r m s}=\sqrt{\frac{3 R T}{m}}\\ $$ V_{rms} \alpha \frac{1}{\sqrt{m}}\\

\begin{aligned} & \frac{(\text { vrms })_H_2}{\text { vrrms })_{0_2}}=\sqrt{\frac{m_{\mathrm{O}_2}}{m_{n_2}}}=\sqrt{\frac{32}{2}}=4 \\ & \text { (Vrms) } \mathrm{O}_2=\frac{\left(V_{\text {rms }}\right)\mathrm{H}_2}{4}=\frac{180}{4}=45 \mathrm{~m} / \mathrm{sec} \\ & \end{aligned}

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shivangi.shekhar

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