AP EAMCET · PHYSICS · Kinetic Theory of Gases
A gas volume \(251 \mathrm{~cm}^3\) at \(20^{\circ} \mathrm{C}\) and pressure \(78 \mathrm{~cm}\) of \(\mathrm{Hg}\). Find its volume at NTP
- A \(420 \mathrm{~cm}^3\)
- B \(440 \mathrm{~cm}^3\)
- C \(263.8 \mathrm{~cm}^3\)
- D \(100 \mathrm{~cm}^3\)
Answer & Solution
Correct Answer
(C) \(263.8 \mathrm{~cm}^3\)
Step-by-step Solution
Detailed explanation
Volume of gas, \(V=251 \mathrm{~cm}^3\) Temperature, \(\begin{aligned} & T_1=20^{\circ} \mathrm{C}=273+20=293^{\circ} \mathrm{K} \\ & p_1=78 \mathrm{~cm} \text { of } \mathrm{Hg} \end{aligned}\) At NTP, Temperature, \(T_2=300 \mathrm{~K}\) Pressure,…
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