A chemist prepares a solution of iron (II) bromide FeBr2 by measuring out 0.55kg of iron (II) bromide into a 500. mL volumetric flask and filling the flask to the mark with water.

Calculate the concentration in / molL of the chemist's iron (II) bromide solution.

Round your answer to 2 significant digits

Question

Chemistry

Bernie

20 September, 16:28

A chemist prepares a solution of iron (II) bromide FeBr2 by measuring out 0.55kg of iron (II) bromide into a 500. mL volumetric flask and filling the flask to the mark with water.

Calculate the concentration in / molL of the chemist's iron (II) bromide solution.

Round your answer to 2 significant digits

+1

Answers (1)

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Milo Deleon · Answer 1

Molar mass of ferrous bromide: 215.65

m (FeBr2) : 550/215.65 = 2.55moles

this is dissolved in 500mL of water so in 1L of solution there will be 2.55x2 = 5.1mol/L