问题 选择题

室温下,用0.1000mol•L-1.NaOH溶液分别滴定体积均为20.00mL的盐酸和醋酸溶液,滴定曲线如图.下列说法正确的是(  )

A.I、Ⅱ分别表示盐酸和醋酸的滴定曲线

B.盐酸和醋酸的浓度均为0.1000mol•L-1

C.pH=7时,两种酸所消耗NaOH溶液的体积相等

D.V(NaOH)=20.00mL时,c(Cl-)=c(CH3COO-

答案

A.滴定开始时0.1000mol/L盐酸pH=1,0.1000mol/L醋酸pH>1,所以滴定盐酸的曲线是图Ⅱ,滴定醋酸的曲线是图Ⅰ,故A错误;

B.由得到曲线可知,滴入等体积的氢氧化钠溶液时,盐酸和醋酸恰好完全反应,说明盐酸和醋酸的浓度都是0.1000mol•L-1,故B正确;

C.醋酸钠水解呈碱性,氯化钠不水解,pH=7时,醋酸所消耗的NaOH溶液的体积小,故C错误;

D.V(NaOH)=20.00mL时,二者反应生成氯化钠和醋酸钠,醋酸根发生水解,浓度小于氯离子,即c(Cl-)>c(CH3COO-),故D错误;

故选B.

阅读理解

There are some famous buildings that everyone can recognize. When you see a picture of a sports stadium that reminds you of a bird’s nest, you probably know it is the Olympic stadium in Beijing. When you see a picture of a famous concert hall that reminds you of a sailing ship, you probably know it is the Sydney Opera House in Australia. Buildings like these are easily recognized everywhere in the world. They were designed to look like other things if people use their imaginations.

Other buildings do not need any imagination. They are made to look exactly like other things. Sometimes, these buildings are offices, restaurants, or even houses. Three buildings built in this way are actually museums. The shape of the building is clue to the objects people can see inside.

In Guizhou, China, people can visit the Meitan Tea Museum, built in the shape of a giant teapot. There is also a second building next door that is shaped like a huge tea cup. From far away, the nine-story teapot-shaped museum looks like some kinds of giant work of art. But as one gets closer, the windows make it clear that this is a building.

People who are interested in guitars might want to visit the Guitar Museum in Tennessee, USA. The three-story building is shaped like a guitar lying on its side. Inside, visitors can see all kinds of guitars as well as learn about famous guitar players. 

One of the newest funny shaped museums is a pottery museum in Gyconggi, Korean museum, built in 2011, is shaped just like a traditional Korean pot, Along with seeing exam pots and tools used for making pots in the museum, visitors can try to make their own pots.

小题1:Sydney Opera House look like_______and it is in Australia.

A. a bird’s nest    B. a sailing ship    C. a nice guitar

小题2:People can visit the building in the shape of teapot__________.

A. in Guizhou, China   B. In Tennessee, USA   C. in Gycouggi, Korea

小题3:The underlined word” giant” means “_________” in Chinese.

A.豪华的     B. 巨大的     C. 古老的

小题4: Which is NOT true about the building that is shaped like a guitar?

A. People can see all kinds of guitars inside of it.

B. You can find information about famous guitar players there.

C. The two-story building is shaped like a guitar lying on its side.

小题5:The Olympic stadium and the Sydney Opera House are examples of ________.

A. buildings that look exactly like things in them

B. buildings that look like other things

C. buildings that look like famous things

单项选择题