问题 选择题

常温,将1molHCl气体溶于水配为500mL溶液,下列说法错误的是(  )

A.溶液中溶质的质量为36.5g

B.溶液中H+的物质的量浓度为2mol•L-1

C.溶液中HCl的分子数约为6.02×1023

D.该HCl气体在标准状况下的体积约为22.4L

答案

A、溶液中溶质的质量为m=nM=1mol×36.5g/mol=36.5g,故A正确;

B、将1molHCl气体溶于水配为500mL溶液,所以C(HCl)=

1mol
0.5L
=2mol/L,则C(H+)=C(HCl)=2mol/L,故B正确;

C、HCl溶于水,完全电离,不存在HCl分子,故C错误;

D、该HCl气体在标准状况下的体积V=nVm=1mol×22.4L/mol=22.4L,故D正确;

故选:C.

阅读理解

阅读理解。

     In 1998, I wrote a letter for my future self with instructions not to open until my birthday 2010. It

was now 2011, so I decided to open it. This is what it said:

    Dear Sherri,

     By the time you read this, you will be 30. At the age of 18 I had many hopes and dreams about you.

Right now I hope you have traveled and seen everything you've always wanted to, both in Canada and

abroad, maybe you have even settled (定居) down somewhere in France, and maybe you are working

in the field of art. I hope you're married to Gwynn -- the man of your dreams. You'll probably have two

children - a girl and a boy.

     If everything goes okay, you'll be living in France in a big house in a small town with Gwynn and

your two children. You are doing research in painting. Gwynn will be a computer programmer and you

will be doing all right for yourselves.

     However, if things don't go according to plan, I wish you love, happiness and joy.

                                                                                                                                       Love,

                                                                                                                               Sherri "18"

      When I read this, I was surprised. So much of what I wanted has come true.

       I did travel to a few more places in Canada. I've traveled to the UK, Australia and Egypt. 3I have

been living in France for nearly 4 years in a big house, in a small suburb (郊区), in a major city. I am an

art teacher in a university. I have two lovely kids.

     But not everything went as what I hoped. I married a man named Tom Rees, and he is an excellent

artist. We are doing all right for ourselves.

    4I find it cool how the dreams of a young girl can become a grown woman's reality (现实).

1. How many hopes and dreams did the 18-year-old Sherri have?

   ________________________________________________________________________

2. Which of her hopes and dreams didn’t come true? 

    ________________________________________________________________________

将短文中划线的句子译成汉语。

3. ________________________________________________________________________

4. ________________________________________________________________________

5. 请给短文拟一个适当的英文标题。

   ________________________________________________________________________

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