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1.下列离子方程式书写正确的是(). A.澄清的石灰水与稀盐酸反应: Ca(OH),+4H十=ea,++HZo B.钠与水的反应: Na+ZHZO=Na‘+20H一+HZt C.铜片插人硝酸银溶液中: Cu+ZAg‘=Cu,‘+ZAg丰 D.大理石溶于醋酸的反应: CaCO3+ZCH3Co0H=CaZ‘+CH3COO一+ COZ卞+HZO 2.在某溶液中酚酞呈粉红色
1. The following ion equations are written correctly (). A. Clarified lime water reacts with dilute hydrochloric acid: Ca(OH), +4H dec = ea, ++HZo B. Reaction of sodium with water: Na + ZHZO = Na ’+20H-+HZt C. Copper Inserts in Silver Nitrate Solution: Cu+ZAg’=Cu,’+ZAg-Feng D. Marble Reaction in Acetic Acid: CaCO3+ZCH3Co0H=CaZ’+CH3COO-+COZ卞+ HZO 2. Phenolphthalein is pink in a solution