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Mention of causes for the deviation of ral gas from ideal behaviour. |
Answer» Solution :For an ideal gas, `PV=RT` However, the value of pressure `xx` volume is not constant for real gases. A graph of pressure along X-axis and PV along y-axis straight line parallel to X-axis for an ideal gas. PV versus P graph shows deviation in CASE of real gases. These graphs are CALLED .. Amagat. s curve.s ... Ex: Easily liquegiable gases like `CO_(2) and NH_(2)` SHOW a greater deviation from ideal behaviour but gases like H and He deviate deviate to smaller extent. At low pressure : For gases except `H_(2)` and He, the value of PV DECREASES gradually with increases 1n pressure. At high pressure : As pressure is increased the PV value decreases and BECOMES a minimu. `:.` it gradually increases with increases in pressure. The deviation becomes greater at high pressure. |
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