问题描述：
what is the molarity of a 30% (vol/vol) solution of H2SO4 (density of H2SO4=1.8g/ml)答案5.5M
which of the following acids is the weakest?
A.HF kA=6.8*10的-4次方 B.H3PO4 kA= 7.5*10的负三次方 C.HNO2 kA=4.5*10的-4次方 D.CH3COOH kA=1.8*10的-5次方 E.H2S kA=1.1*10的-7次方 这种题如何判断pH啊?
Given Mn2+ +2e- =Mn -1.20V
Zn2+ + 2e- = Zn -0.8V
what is the expression for the equilibrium constant of the spontaneous oxidation reduction reaction?
Keq=10的0.8/0.59次方 求分析及解答公式
the pKa of acid X is 5.the pH of a solution containing acid X and its conjugate base is 6.what is the ratio of the concentration of cojugate base to the concentration of the acid?1
which of the following acids is the weakest?
A.HF kA=6.8*10的-4次方 B.H3PO4 kA= 7.5*10的负三次方 C.HNO2 kA=4.5*10的-4次方 D.CH3COOH kA=1.8*10的-5次方 E.H2S kA=1.1*10的-7次方 这种题如何判断pH啊?
Given Mn2+ +2e- =Mn -1.20V
Zn2+ + 2e- = Zn -0.8V
what is the expression for the equilibrium constant of the spontaneous oxidation reduction reaction?
Keq=10的0.8/0.59次方 求分析及解答公式
the pKa of acid X is 5.the pH of a solution containing acid X and its conjugate base is 6.what is the ratio of the concentration of cojugate base to the concentration of the acid?1
问题解答：
我来补答
再答： 看得到图吗？再答： 第二题他有提供Ka吗？应该不用根据非金属性就可以判断了
再问： 谢谢 第一题已明白 第二题题给的就是 酸 然后一个ka值 判断哪个酸最弱
再答： 请问你这些题目是哪里的啊？
再答： 普林斯顿还是巴朗？
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