A 0.4 g sample of monobasic acid requires 16cm3 of 0.1 mol per dm3 of NaOH for complete neutralization . what is the relative mass of the acid?? Plz ans me urgent

Answer 1

HA + NaOH ==> NaA + H2O
mols NaOH = M x L = ?
mols HA = mols NaOH (look at the 1:1 coefficients)
mols HA = grams/molar mass
You know mols HA and grams, solve for molar mass.

Answer 2

Urgent need