Lactic acid (C3H603), which occurs in sour milk, sauerkraut and sore muscles, is weak monoprotic acid (Ka 0.00014).
a) Calculate the pH of a 0.125M aqueous solution of lactic acid.
Consider the structure of lactic acid. What makes the molecule act as weak acid? What makes it a stronger acid than acetic acid, CH3COOH (Ka 0.000018)? EXPLAIN BRIEFLY.