Formic acid, HCHO2, is used to make methyl formate (a fumigant for dried fruit) and ethyl formate

Question:

Formic acid, HCHO2, is used to make methyl formate (a fumigant for dried fruit) and ethyl formate (an artificial rum flavor). What is the pH of a 0.10 M solution of formic acid? What is the degree of ionization of HCHO2 in this solution? See Table 16.1 for Ka.