题目柠檬酸(H3A)的pKa1 = 3.13,pKa2 = 4.76,pKa3 = 6.40,则柠檬酸钠(Na3A)的pKb1为( )。A. 10.87B. 9.24C. 7.60D. 6.40柠檬酸(H3A)的pKa1 = 3.13,pKa2 = 4.76,pKa3 = 6.40,则柠檬酸钠(Na3A)的pKb1为( )。A. 10.87B. 9.24C. 7.60D. 6.40题目解答答案C. 7.60