Question

A solution has 25gram of sodium chloride 175 gram of water. What is concentration of sodium chloride in terms of weight/weight %

Answer 1

Hi there,

◇ Given

■ Solute is NaCl

■ Weight of solute = 25 g

■ Solvent is H2O

■ Weight of solvent = 175 g

■ Weight of solution =

☆ 175 + 25 = 200g

☆ W/W % =

● W of solute ÷ W of solution × 100

● W/W% = 25 ÷ 200 × 100 = 12.5 %

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