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What is the pH of solution that is 7.0
Question #46. A 0.1 M aqueous solution of formic acid was titrated at 25ΓΒΊC with a 0.1 M
aqueous solution of NaOH. In this experiment, the equivalence point will be reached this pH
value (For formic acid, Ka = 1.80 x 10-4) :
Please show work
(1) pH < 7.0; (2) pH > 7.0; (3) pH = 7.0; (4) None of the above
(Water Chemistry 2nd ed. Chap5 problem 12)
Na2CO3 is added to pure water until the pH is 9.45. (a) What is TOTCO3 in the solution? (b) How much HCl would have to be added to the solution to lower the pH to 7.0? (c) How much H2CO3 would have to be added to the solution to lower the pH to 7.0?