能使澄清石灰水變渾濁的氣體:CO2和SO2.但通入過量氣體時(shí)沉淀又消失.鑒別用品紅. 查看更多

 

題目列表(包括答案和解析)

(1)將碎蛋殼(主要成分是CaCO3)浸泡在鹽酸中會(huì)生成一種能使澄清石灰水變渾濁的無色氣體。上述的兩個(gè)反應(yīng)的離子方程式為:①                            

                                                                          

(2)我們常在熱水瓶中看到水垢,其主要成分是CaCO3和Mg(OH)2,要除去水垢,常用的方法是向瓶中加入稀醋酸將其溶解,其反應(yīng)的離子方程式為①                     

                                                                         

(3)MgSO4溶液中滴加少量氨水,其反應(yīng)的離子方程式為                             

(4)請(qǐng)將下列離子方程式改寫為化學(xué)方程式:

① 2NH4+ + Ba2+ + 2OH- + SO42- = BaSO4↓+2NH3·H2O

                                                                         

② BaCO3 + 2H+ = Ba2++CO2↑+H2O

                                                                       

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(1)將碎蛋殼(主要成分是CaCO3)浸泡在鹽酸中會(huì)生成一種能使澄清石灰水變渾濁的無色氣體。上述的兩個(gè)反應(yīng)的離子方程式為:①                            

                                                                         

(2)我們常在熱水瓶中看到水垢,其主要成分是CaCO3和Mg(OH)2,要除去水垢,常用的方法是向瓶中加入稀醋酸將其溶解,其反應(yīng)的離子方程式為①                     

                                                                        

(3)MgSO4溶液中滴加少量氨水,其反應(yīng)的離子方程式為                              

(4)請(qǐng)將下列離子方程式改寫為化學(xué)方程式:

① 2NH4+ + Ba2++ 2OH- + SO42- = BaSO4↓+2NH3·H2O

                                                                         

② BaCO3+ 2H+ = Ba2++CO2↑+H2O

                                                                      

 

查看答案和解析>>

(1)將碎蛋殼(主要成分是CaCO3)浸泡在鹽酸中會(huì)生成一種能使澄清石灰水變渾濁的無色氣體。上述的兩個(gè)反應(yīng)的離子方程式為:①                            
                                                                         
(2)我們常在熱水瓶中看到水垢,其主要成分是CaCO3和Mg(OH)2,要除去水垢,常用的方法是向瓶中加入稀醋酸將其溶解,其反應(yīng)的離子方程式為①                     
                                                                        
(3)MgSO4溶液中滴加少量氨水,其反應(yīng)的離子方程式為                             
(4)請(qǐng)將下列離子方程式改寫為化學(xué)方程式:
① 2NH4+ + Ba2+ + 2OH- + SO42- = BaSO4↓+2NH3·H2O
                                                                         
② BaCO3 + 2H+ = Ba2++CO2↑+H2O
                                                                      

查看答案和解析>>

(1)將碎蛋殼(主要成分是CaCO3)浸泡在鹽酸中會(huì)生成一種能使澄清石灰水變渾濁的無色氣體。上述的兩個(gè)反應(yīng)的離子方程式為:①                            

                                                                          

(2)我們常在熱水瓶中看到水垢,其主要成分是CaCO3和Mg(OH)2,要除去水垢,常用的方法是向瓶中加入稀醋酸將其溶解,其反應(yīng)的離子方程式為①                     

                                                                         

(3)MgSO4溶液中滴加少量氨水,其反應(yīng)的離子方程式為                              

(4)請(qǐng)將下列離子方程式改寫為化學(xué)方程式:

① 2NH4+ + Ba2+ + 2OH- + SO42- = BaSO4↓+2NH3·H2O

                                                                         

② BaCO3 + 2H+ = Ba2++CO2↑+H2O

                                                                       

 

查看答案和解析>>

(1)將碎蛋殼(主要成分是CaCO3)浸泡在鹽酸中會(huì)生成一種能使澄清石灰水變渾濁的無色氣體。上述的兩個(gè)反應(yīng)的離子方程式為:①                            
                                                                         
(2)我們常在熱水瓶中看到水垢,其主要成分是CaCO3和Mg(OH)2,要除去水垢,常用的方法是向瓶中加入稀醋酸將其溶解,其反應(yīng)的離子方程式為①                     
                                                                        
(3)MgSO4溶液中滴加少量氨水,其反應(yīng)的離子方程式為                             
(4)請(qǐng)將下列離子方程式改寫為化學(xué)方程式:
① 2NH4+ + Ba2+ + 2OH- + SO42- = BaSO4↓+2NH3·H2O
                                                                         
② BaCO3 + 2H+ = Ba2++CO2↑+H2O
                                                                      

查看答案和解析>>


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