题目内容

都能用右图所示装置进行喷泉实验的一组气体是(注:烧杯内为NaOH溶液)                             (    )

A.HCl和CO2        B.NH3和CH4       

C.SO2和CO         D.NO2和NO

A


解析:

在上述气体中,CH4、NO、CO不溶于NaOH溶液,也不与NaOH溶液反应,所以不能做喷泉实验,而HCl、SO2、CO2不仅可溶于NaOH溶液而且还可与NaOH溶液反应,所以能形成喷泉。

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相关题目

为验证卤素单质氧化性的相对强弱,某小组用右图所示装置进行试验(夹持仪器已略去,气密性已检验)。试验过程:

I.打开弹簧夹,打开活塞a,滴加浓盐酸。

II.当B和C中的溶液都变为黄色时,夹紧弹簧夹。

III.当B中溶液由黄色变为棕色时,关闭活塞a。

IV.……

试回答下列问题:

(1)A中产生                                                                                                         色气体,其结构式是                 

(2)能使湿润的淀粉—KI试纸变蓝的气体是                                                                 

(a) Cl2(b) N2O4 (c) I2蒸气 (d) SO2 (e) O3 (f) CO2

(3)滴加浓盐酸前,分液漏斗首先要                                                                                                                      

(4)过程III实验目的是                                                                                                                                                                                                                                                              

(5)A中产生氯气的离子方程式为                                                                                                                                                                                                                                                        

(6)B中浸有NaOH溶液的棉花作用是                                                                                               ,写出反应的离子方程式                                                                                                                                                                                                                                                                         

 

为验证卤素单质氧化性的相对强弱,某小组用右图所示装置进行试验(夹持仪器已略去,气密性已检验)。试验过程:

I.打开弹簧夹,打开活塞a,滴加浓盐酸。
II.当B和C中的溶液都变为黄色时,夹紧弹簧夹。
III.当B中溶液由黄色变为棕色时,关闭活塞a。
IV.……
试回答下列问题:
(1)A中产生                                                                                                        色气体,其结构式是                 
(2)能使湿润的淀粉—KI试纸变蓝的气体是                                                                 
(a) Cl2 (b) N2O4 (c) I2蒸气 (d) SO2 (e) O3 (f) CO2
(3)滴加浓盐酸前,分液漏斗首先要                                                                                                                      
(4)过程III实验目的是                                                                                                                                                                                                                                                            
(5)A中产生氯气的离子方程式为                                                                                                                                                                                                                                                       
(6)B中浸有NaOH溶液的棉花作用是                                                                                              ,写出反应的离子方程式                                                                                                                                                                                                                                                                        

为验证卤素单质氧化性的相对强弱,某小组用右图所示装置进行试验(夹持仪器已略去,气密性已检验)。试验过程:

I.打开弹簧夹,打开活塞a,滴加浓盐酸。

II.当B和C中的溶液都变为黄色时,夹紧弹簧夹。

III.当B中溶液由黄色变为棕色时,关闭活塞a。

IV.……

试回答下列问题:

(1)A中产生                                                                                                         色气体,其结构式是                 

(2)能使湿润的淀粉—KI试纸变蓝的气体是                                                                 

(a) Cl2 (b) N2O4 (c) I2蒸气 (d) SO2 (e) O3 (f) CO2

(3)滴加浓盐酸前,分液漏斗首先要                                                                                                                      

(4)过程III实验目的是                                                                                                                                                                                                                                                              

(5)A中产生氯气的离子方程式为                                                                                                                                                                                                                                                        

(6)B中浸有NaOH溶液的棉花作用是                                                                                               ,写出反应的离子方程式                                                                                                                                                                                                                                                                         

 

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