称取一元弱酸HA1.04g,配制成100.0ml,测得其PH=2.64,计算该一元弱 发布时间:2017-08-16 21:31 │ 来源:www.tikuol.com 题型:问答题 计算题 问题: 称取一元弱酸HA1.04g,配制成100.0ml,测得其PH=2.64,计算该一元弱酸的PKa的近似值。(HA的摩尔质量M=122.1g/mol)
题型:问答题 计算题 Health problems are closely connected with bad eating habits and a _______ of exercise.A.limitB.lackC.needD.demand 查看答案