(14分) 甲醇被称为2l世纪的新型燃料,工业上通过下列反应Ⅰ和Ⅱ,来制备甲醇。

题型:填空题

问题:

(14分)

甲醇被称为2l世纪的新型燃料,工业上通过下列反应Ⅰ和Ⅱ,来制备甲醇。

(1)将1.0 mol CH4和2.0 mol H2O(g)通入反应室(容积为100L),在一定条件下发生反应:CH4(g)+H2O(g) CO(g)+3H2(g)……Ⅰ,CH4的转化率与温度、压强的关系如右图所示:

①已知100℃时达到平衡所需的时间为5min,则用H2表示的平均反应速率为       

②图中的P1                P2(填“<”、“>”或“=”),100℃时平衡常数为             

(2)在压强为0.1 MPa条件下,  a mol CO与 3a mol H2的混合气体在催化剂作用下能自发反应生成甲醇:CO(g)+2H2(g) CH3OH(g) ……Ⅱ。

③该反应的△H               0,△S                 0(填“<”、“>”或“=”)。

④若容器容积不变,下列措施可增加甲醇产率的是                    

A.升高温度

B.将CH3OH(g)从体系中分离

C.充入He,使体系总压强增大

D.再充入1mol CO和3mol H2(3)在最新开发并投入生产的流动电解质直接甲醇燃料电池中,流动电解质硫酸的使用,可提高燃料电池效率约30%,该电池的负极反应为                              

考点:化学平衡的有关计算影响化学平衡的因素达到化学平衡的标志化学平衡常数
题型:填空题

信息匹配(共5小题;每小题2分,满分10分)

阅读下列应用文及相关情息,井按照要求匹配信息。

首先请阅读下列课程的信息:

A. City Water Skiing Centre —— We are in the heart of the city and give you an easy chance to enjoy the fun and excitement of water skiing. We offer half-hour lessons every hour between 9 am and 4 pm. A fun way to get a lot of exercise quickly and then stay fit.

B. Horse Riding School ——Our experienced teachers provide one-on-one instruction that makes leaning to ride a horse safe and easy. We are located on a large farm where you will be able to get to enjoy lots of fresh air and the beauty of nature. Open 7 days a week between 8 am and 6 pm.

C. Ballroom Dancing Society ——The dancing society is organizing a special course for new members. No experience is necessary and if you don't have your own partner we will arrange one for you. Have fun learning to dance and making new friends in class and at our many social events. Classes every Monday and Thursday from 7 pm to 9 pm.

D. Hiking Club —— The club is looking for new members to join us on our regular hikes. Each weekend we go to local mountain and forest locations for long walks providing the chance for plenty of exercise and fresh air. Different members take part each week so you will have the chance to make new friends. The hikes range in difficulty from easy to very hard and we expect our member to be fit before they join.

E. Ron's Boxing Gym ——We don't just teach you how to box; we teach you how to keep fit for the rest of your life. Our training involves many different activities such as running , skipping and lifting weight, as well as ——of course —— actual boxing . Once a month we also organize practice fights for members of the same sex and weight. Open 2 pm to 10 pm.

F. Water Polo Club ——If you can swim and like ball sports then you'1l love water polo. It is like playing football in the water, a fun and low-impact way to stay healthy. As a water-based sport it is also the ideal way to recover from injury. Open weekdays 9 am to 11 am and 4 pm to 8 pm.

请阅读下列个人信息,然后匹配人物与拟选的课程:

小题1:Harold is a busy bank manager working in the city. He has put on a lot of weight in recent years and wants to take up a sport that will help him get fit. He enjoys thrilling and exciting sports but as he often has to work late into the evening and on the weekend so he only has time to go during his workday lunch hour.

小题2:Maude has been retired for 2 years. She is in good health but wants to keep active and remain in shape. She is interested in a hobby that isn't too difficult to learn and will give her lots of fresh air and the chance to meet some new friends. She only has free time on the weekend as most weekdays are spent taking care of her grandchildren.

小题3:id is a high school student that recently hurt his knee playing football. The doctor has told him that for the next 6 months he shouldn't put too much pressure or weight on it and he needs to do some sport that will help him build up his strength but will not cause any more damage to his knee. Afternoon after school is his preferred time.

小题4:Nancy is a university student who loves excitement and is always willing to try out something different. She has little patience however and wants a sporting activity that will give her the chance to do many different things. As she works part time after class and on the weekend she is only free on weekday afternoon.

小题5:Spike has recently moved to the city and doesn't have many friends. He is not really a sports fan but wants to do something that is fun and that will give him the chance to meet new people. He is only free in the evening.

题型:填空题

指出A群链球菌引起的严重综合征的重要症状

A.广泛性肌肉坏死,脓液有粪臭味

B.引起化脓

C.一旦挤压脓肿,细菌人血引起败血症

D.脓血便

E.低血压休克,多脏器功能衰竭

题型:填空题

光动力疗法(photodynamictherapy)

题型:填空题

十一届全国人大三次会议通过的新选举法规定:城乡按相同人口比例选举人大代表,选举委员会应组织候选人与选民见面,回答选民的问题。这些规定()。

A.体现了国家机构民主集中制的组织原则

B.有利于保障公民平等地享有选举权

C.体现了差额选举和等额选举的结合

D.有利于选民了解和鉴别候选人

题型:填空题

儿心理上对药物的()也有一定要求,故应掌握小儿心理、生理特点和药理学紧密联系起来

A.色

B.香

C.味

D.外观

更多题库