题目:
下列离子方程式正确的是 ( )
A.Cu与浓硝酸反应:Cu+4H++4NO3-=Cu2++4NO2↑+2H2O
B.氨水与醋酸溶液反应:NH3•H2O+CH3COOH=NH4++CH3COO-+H2O
C.过氧化钠溶于水:2O2-+2H2O=4OH-+O2↑
D.小苏打与氢氧化钠溶液混合:HCO3-+OH-=CO2↑+H2O
答案:
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