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CH3COOH溶液中离子浓度的关系满足:[H+]=[OH-]+[CH3COO-] 0.1 mol·L-1的CH3COOH溶液加水稀释,溶液中[OH-]增大 CH3COOH溶液中加入少量CH3COONa固体,平衡逆向移动 常温下,pH=2的CH3COOH溶液与pH=12的NaOH溶液等体积混合后,溶液的pH<7
0.65%NaCl,pH2~635℃ 0.85%NaCl,pH6~837℃ 0.85%NaCl,pH2~635℃ O.85%NaCl,pH2~637℃ 0.65%NaCl,pH6~837℃
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1L. 0.3 mol/L CH3COOH溶液和3L. 0.1 mol/L CH3COOH溶液中的H.+数 pH=1的CH3COOH溶液和盐酸的物质的量浓度 pH=12的氨水和NaOH溶液的导电能力 pH相同的等体积的盐酸和醋酸溶液分别与足量锌粒反应产生的气体体积
0.65% NaCl,pH2~6 35℃ 0.85% NaCl,pH6~8 37℃ 0.85% NaCl,pH2~6 35℃ 0.85% NaCl,pH2~6 37℃ 0.65% NaCl,pH6~8 37℃
pH=2的HA溶液与pH=12的MOH溶液任意比混合: c(H+) + c(M+) === c(OH-) + c(A-) pH相等的CH3COONa、NaOH和Na2CO3三种溶液: c(NaOH)<c(CH3CO ONa)<c(Na2CO3) 物质的量浓度相等CH3COOH和CH3COONa溶液等体积混合: c(CH3COO-) +2c(OH-) === c(H+) + c(CH3COOH) 0.1mol•L-1的NaHA溶液,其pH=4:c(HA-)>c(H+)>c(H2A)>c(A2-)
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