InterviewSolution
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InterviewSolution
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(ii) In Van der Wall's equation:-(P+a/v^2) (v-b) = RT.Find the dímension of a and b Here, P is Pressure, V is volume, T isTemperature and R is a gas Constant. |
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Answer» (P + a/V2) (V - b) = RTP is pressure, V is volume and T is temperature.[P] = [F/A] = [MLT−2/L2] = [ML−1T−2][V] = [L3]We cannot add or subtract quantities of different dimensions. Therefore[P] = [a/V2] ⇒ [a] = [PV2] = [ML−1T−2L6] = [M L5T−2]∴ [a] = [M L5T−2]Similarly,[b] = [V] = [L3] |
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