Chemistry
Senior High
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[11] 次の各反応で、 反応物のうち塩基の働きをするものはどれか。 化学式で答えなさい。
(1) H2SO4 + 2NaOH → Na2SO4 + 2H2O
(2) HS + H2O → S2 + HO+
(3) HCO3 + H2O →H2CO3 + OH
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