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新编普通化学参考答案 第一章 气体、液体和固体 习题 1.一个体积 50.0m 3 的氧气钢瓶,在 20℃时,使用前的压力为 12MPa,使用后压 力变为 10MPa。试计算用掉的氧气的质量。 6 6 R M R M (2 10)*10 *50.0*32 8.314*293 1.313*10 ( ) m pV T m pV T m g = Δ Δ= = 2. 在相同温度下, 将压力为 400kPa的O 2 5.0 dm 3 和 100kPa的H 2 20.0 dm 3 充入一 个 40 dm 3 的密闭容器中。试求该温度下混合气体的总压力以及两种气体的分压 力。 2 2 22 11 O H total O H 400*5.0 50(kPa) 40 100*20.0 50(kPa) 40 100(kPa) pV p p pp p = == =+= 3.在 20℃、标准大气压下,用排水法收集氢气 0.10g。若此温度下水的蒸气压 为 2.70kPa,求 此时收集到的 H 2 的体积。 33 3 R M 0.10*8.314*293 1.235*10 (m ) 2*(101325 2.70*10 ) m pV T V = 4.300K的温度下,在体积为 1.00 dm 3 的密闭容器中加入 1.00molCO 2 。试分别用 理想气体状态方程和范德华方程计算其压力 (范德华常数见答案)
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新编普通化学参考答案 6 3 2 6- 2 - 5 3 R 1.00*8.314*300 2.49*10 (Pa) 1.00*10 a () ( b ) R where:a=0.364m *Pa*mol
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This note was uploaded on 02/18/2012 for the course SCIENCE 1221 taught by Professor Lee during the Spring '10 term at Renmin University of China.

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第ä¸�ç« æ�°ç­�æ¡� - 1 50.0m3 20 12MPa...

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