Volumetric-QN06
What volume concentrated sulphuric acid is required to prepare 0.4m of 750ml dilute sulphuric acid. (given; mw = 98, density= 1.84g/cm3). H = 1
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Soln:
Data:
Molarity of H2SO4 = 0.4m (dilute)
Volume of dilute H2SO4 = 750 ml
Asked
Volume of concentrated H2SO4
To find: molarity of Conc.
Mc = (density × purity × 1000) / Mw
= (1.84g/cm3 × 98/100 × 1000) / 98
= 18.4 m
From, McVc = MdVd
Vc = MdVd / Mc
= (0.4M × 750ml) / 18.4
= 16.3ml
Volume of concentrated sulphuric acid required was 16.3 cm3
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