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The following ion equation is incorrectly written () A. Reaction of chlorine with caustic soda solution at normal temperature: Cl2+2OH- Cl-+ClO-+H2O B. Add sufficient ammonia in AlCl3 solution: Al3+3NH3•H2O Al (OH)3 3NH4+ C. Reaction of copper with dilute nitric acid: Cu+2H+ Cu2++H2↑ D. Addition of KSCN: Fe3+3SCN-Fe (SCN)3 in FeCl3 solution
A. The ionic reaction of chlorine with caustic soda solution at room temperature is Cl2+2OH- Cl-+ClO-+H2O, so A is correct; B. the ionic reaction of AlCl3 solution with sufficient ammonia water is Al3+3NH3•H2O Al (OH)3 3NH4+, so B is correct; C. the ionic reaction of copper with dilute nitric acid is 3Cu+2NO3-...
A. The ionic reaction of chlorine with caustic soda solution at room temperature is Cl2+2OH- Cl-+ClO-+H2O, so A is correct; B. The ionic reaction of AlCl3 solution with sufficient ammonia water is Al3+3NH3•H2O Al (OH)3 3NH4+, so B is correct; C. The ionic reaction of copper with dilute nitric acid is 3Cu+2NO3-...
When producing toxic chlorine gas (Cl2) in the laboratory, caustic soda solution is commonly used to absorb excess chlorine gas. The chemical equation of the reaction is: Cl2+2NaOH NaClO+NaCl+H2O (where NaClO is sodium hypochlorite and ClO- is hypochlorite). When preparing toxic chlorine gas (Cl2) in the laboratory, caustic soda solution is commonly used to absorb excess chlorine gas. The chemical equation of the reaction is: Cl2+2NaOH NaClO+NaCl+H2O (where NaClO is sodium hypochlorite and ClO- is hypochlorite).
From the chemical equation of the reaction of chlorine with sodium hydroxide, it can be known that:
Chlorine reacts with calcium hydroxide to form calcium hypochlorite, calcium chloride and water.
The chemical equation of the reaction is:2Ca (OH)2+2Cl 2 Ca (ClO)2+CaCl 2+2H 2O.
Therefore, the answer is:2Ca (OH)2+2Cl 2 Ca (ClO)2+CaCl 2+2H 2O.
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