Question

calculate the mass of potassium hydrogen phthalate (KHP) needed to prepare a 0.1 M solution in a 250.0ml volumetric flask given that the molar mass of potassium hydrogen phthalate is 204.23 g/mol.

Answer 1

$Volume= 250.0ml = 0.25 l$

$Moles = 0.25 ×0.1=0.025grams$

Mass in grams $= 0.025 × 204.23= 5.106grams$