中南大学无机化学气体部分习题及答案.doc

第1章? 气体一、单选题1、某气体AB，在高温下建立下列平衡∶AB(g)==A(g)＋B(g).若把1.00mol此气体在T =300K，P =101 kPa下放在某密闭容器中，加热到600K时，有25.0%解离。此时体系的内部压力(kPa)为???????????????????? ( ??)? ????? ??A． ?253??? B． ?101??? C． 50.5??? D．? 126 2、一敞口烧瓶在 7℃ 时盛满某种气体 ，欲使 1/3 的气体逸出烧瓶 ，需加热到???? （ ??A．? 100℃??? B．? 693 ℃??? C．? 420 3、实际气体和理想气体更接近的条件是?? ( ??)A． 高温高压 ???B. 低温高压 ???C. 高温低压 ???D. 低温低压4、Ａ，Ｂ两种气体在容器中混合，容器体积为V，在温度T下测得压力为 P，VA ，VB 分别为两气体的分体积，PA ，PB 为两气体的分压，下列算式中不正确的一个是 (?? )A.?? PVA = nART???????????? B.??? PAVA =nA RTC.?? PAV= nA RV???????????? D.??? PA (VA+VB )= nA RT5、某容器中加入相同物质的量的NO和Cl2，在一定温度下发生反应：NO(g)+1/2Cl2NOCl(g)。平衡时，各物种分压的结论肯定错误的是?????????????????????????????????????? （?? ）A.?? P(NO)=P(Cl2)???????????? B.??? P(NO)=P(NOCl)?? C.?? P(NO)P(Cl2)??????? ?????D.??? P(NO)P(NOCl)6、The height of a column of liquid supported by atmospheric pressure is inversely proportional to the density of the liquid. Mercury has a density of 13.6 g/mL. How high a column of water (density = 1.00 g/mL) would be supported by an atmospheric pressure of 0.876 atm? ?(?? )????? A.? 9.05×10B. ?1.03×10????? C.? 49.0 mm????? D.? 11.9 mm7、If you purchase a balloon filled with helium and take it outside on a cold day, you will notice that it shrinks and becomes less buoyant. What gas law explains this observation? ?(?? )????? A.? Boyles????? B.? Charless????? C.? Avogadros????? D.? Grahams8、A sample of gas occupies 10.0 L at 50°C. Assuming that pressure is constant, what volume will the gas occupy at 100°C?? (?? )????? A.? 10.0 L????? B.? 20.0 L????? C.? 11.5 L????? D.? 5.0 L9、What is the Charless law constant (in L/K) for 200 mg of carbon dioxide at 600 mm pressure? ????? A. 4.73? 10–4 L/K????? B. 5.64? 10–3 L/K????? C. 42.0 L/K????? D. 2.11? 103 L/K10、At a given temperature and pressure, which gas occupies the smallest volume per unit mass? (?? )????? A? O2????? B.? Ar????? C.? CO2????? D.? Xe11、At what temperature (in °C) will 25.0 g of carbon dioxide (at 1.00 atm) occupy. (?? )????? A.? 188°C????? B?? 461°C????? C. ?–263°C????? D. ?