题目

某学习小组用下列装置进行CO2的制取及性质探究实验． 资料卡片：20℃时，碳酸钠在乙醇中几乎不溶解，氢氧化钠在乙醇中的溶解度为17.3g.20℃时，碳酸钠、碳酸氢钠在水中的溶解度分别为21.8g和9.6g．请根据如图回答下列问题： （1） 图中装置A是用大理石制CO2的装置，仪器a的名称是；装置A中发生反应的化学方程式是，在b处检验是否有CO2逸出的操作是． （2） 装置C中放有干和湿的pH试纸各一张，当通入CO2一段时间后，湿pH试纸显示pH约为6，Last Sunday we had a great trip. My father, my mother and I to summer camp. We went to the mountains. First we to the foot of the mountain bus. In the middle of the mountain there was a river. The water was clean and clear. I washed my face the water. It was warm. There some fishes in the river. In the mountain there were flowers. They were . At noon , many people got together ,and they were very We made our meal in the mountain. The food was very ,and we liked it very much. After meal , we went on our trip. We felt . It was really .1.A. go B. goes C. went D. to go2.A. get B. got C. got to D. arrived3.A. by B. on C. in D. took4.A. on B. with C. in D. into5.A. is B. was C. were D. are6.A. ugly B. beautiful C. awful D. delicious7.A. friendly B. friends C. busy D. tired8.A. nice B. terrible C. bad D. great9.A. happy B. unhappy C. friendly D. interesting10.A. cold B. hot C. fun D. funny