The molecular mass of an organic acid was determind by the study of its barium salt. 4.290 g of salt was converted to free acid by the reaction with 21.64 mL of water of hydration per Ba^(2+) ion and the acid is monobasic. What is molecular weight of anhydrous acidgt

The molecular mass of an organic acid was determind by the study of it

1.	The molecular mass of an organic acid was determind by the study of its barium salt. 4.290 g of salt was converted to free acid by the reaction with 21.64 mL of water of hydration per Ba^(2+) ion and the acid is monobasic. What is molecular weight of anhydrous acidgt
Answer» Solution :MEQ of Braium SALT = mEq of acid `(4.290)/(Mw..2) XX 1000 = 21.64 xx 0.477 xx 2` MOLECULAR weight of salf = 415.60 Molecular weight of anion `= (("Mw of salt" - Mw of BA^(2+) - Mw of 2 H_(2) O))/(2)` `= (415.60 - 137 - 36)/(2) = 121.16` `:.` Molecular weight of acid `= 121.6 + 1 = 122.6`