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ju jiao ph de wu da kao dian
Author(s): 
Pages: 40-42
Year: Issue:  3
Journal: Guangdong Education

Abstract: 在溶液的c(H+)很小时,可用pH来表示溶液的酸度,计算公式为:pH=-lgc(H+),取值范围为0-14。 pH越大, c (H+)越小, c(OH-)越大,酸性越弱,碱性越强。 pH越小,c(H+)越大,c(OH-)越小,酸性越强,碱性越弱。在每年的高考中,对于pH的考查主要有以下几个考点。
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