Question

100 mL 0.1M of aqueous solution of a complex with formula crcl3.6h2o gave curdy white ppt of mass 1.43g. formula of complex?

Answer 1

There are three common percentages of concentration: mass percent, volume percent, and mass per volume percent.

Percent means "per hundred".

Mass Percent (m/m)

Mass percent is the number of grams of substance in 100 g of the mixture. The formula is

Mass % = mass of substancemass of mixture × 100 %

Volume Percent (m/v)

Volume percent is the number of millilitres of substance in 100 mL of the solution. The formula is

Volume % = volume of substancevolume of solution × 100 %

Mass by Volume Percent (m/v)

Mass by volume percent is the number of grams of substance in 100 mL of the solution. The formula is

m/v % = mass of substancevolume of mixture × 100 %

Examples

Calculate the mass percent of NaCl in a solution that contains 300 g NaCl in 1200 g solution.Calculate the volume percent of isopropyl alcohol in a solution that contains 700 mL of isopropyl alcohol in 1.00 L of solution.Calculate the m/v % of K₂SO₄ in a solution that contains 75.0 g K₂SO₄ in 1.50 L of solution.