下列离子方程式书写正确的是 A.Cu与FeCl3溶液反应:Cu+ Fe3+= Cu2++ Fe2+

下列离子方程式书写正确的是

ACuFeCl3溶液反应:Cu+ Fe3+= Cu2++ Fe2+

B.碳酸钙溶于稀盐酸:CO32- + 2H+ = H2O + CO2

CFeSO4溶液和NaOH溶液反应: Fe2+ + 2OH- = Fe(OH)2

D氯气溶于水Cl2 + H2O = 2H+ + ClO- + Cl-

答案

C

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