下列说法正确的是                             (   

下列说法正确的是                             (    )

A.反应:2CO(g)+2NO(g)    N2(g)+2CO2(g)在温度为298K时能自发进行,则它的△H>0,△S>0

B.0.1mol/LNH4C1溶液加蒸馏水稀释,溶液的pH不断减小

C.铅蓄电池放电时,正极和负极均有硫酸铅生成

D.反应:2A(g)B(g)+2C(g),增大压强反应速率加快,A的转化率减小

 

答案

CD

解析:

 

相关题目

There was a ________ look on her face so I repeated the question.   A. puzzled
There was a ________ look on her face so I repeated the question.   A. puzzled    B. puzzling     C. puzzle    D. puzzlement  
        The boys crowded in two teams at the front of Charlene Skinner
        The boys crowded in two teams at the front of Charlene Skinner’s class as they thought over the math problem that flashed on the whiteboard. “That’s not right,” one boy said.
45.分析下表,以下推测不合理的是(      ) 溶液双缩脲试剂
45.分析下表,以下推测不合理的是(      ) 溶液双缩脲试剂碘液斐林实际 甲+-- 乙-++- 甲、乙混合+++      (注:“+”显色,“++”显色更深;“
制备单克隆抗体所采用的细胞工程技术包括(    ) ①细胞
制备单克隆抗体所采用的细胞工程技术包括(    ) ①细胞培养    ②细胞融合    ③胚胎移植    ④细胞核移植 A.①②                 
Many boys are          in playing computer games.A.interestingB.int
Many boys are          in playing computer games.A.interestingB.interestedC.interestsD.interest.
下列各句标点符号使用错误的一项是(    ) A.到了60年代
下列各句标点符号使用错误的一项是(    ) A.到了60年代,物理学家格拉肖、温伯格、萨拉姆引用了杨先生1954年写的这篇文章中的数学结构,即非阿
The big tree is as tall as a _____ balding .          A. two-storeys 
The big tree is as tall as a _____ balding .          A. two-storeys      B. two-stories     C. two-storeying    D. two-storey 
—When was the old car invented? —I think the car       about one hundr
—When was the old car invented? —I think the car       about one hundred years ago. A.invented        B.was invented        C.invents

最新题目