问题
单项选择题
某三元酸H3A的pKa1＝3.96，pKa2＝6.00，pKa3＝10.02，则0.10m0ol／L H3A的pH是()
A．1.10
B．2.48
C．3.96
D．4.88
E．5.47
答案
参考答案：B
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某三元酸H3A的pKa1＝3.96，pKa2＝6.00，pKa3＝10.02，则0.10m0ol／L H3A的pH是()
A．1.10
B．2.48
C．3.96
D．4.88
E．5.47
参考答案：B
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| always = △ sometimes = □ usually = ○ never = ∕ Hello! I'm John. I always do my homework. Usually I watch TV in the evening. Sometimes I walk to school. I never read books on Sundays. Tom usually does his homework. Sometimes he reads books on Sundays. He never walks to school. He always watches TV in the evening. Li Li always reads books on Sundays. She usually does her homework. She never watches TV in the evening. Sometimes she walks to school.
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