Calculate the concentration (in percentage by weight) of a solution obtained by mixing 300 g 25 % by weight solution of N H 4 C l and 150 g o f 40 % by weight solution of N H 4 C l .

Question

Calculate the concentration (in percentage by weight) of a solution obtained by mixing 300 g 25 % by weight solution of N H 4 C l and 150 g o f 40 % by weight solution of N H 4 C l .,

MARKS App · Accepted Answer

Weight of solution I a n d I I = 300 + 150 = 450 g Weight of N H 4 C l in I s o l u t i o n = 25 × 300 100 = 75 g Weight of N H 4 C l in I I s o l u t i o n = 40 × 150 100 = 60 g ∴ Total weight of N H 4 C l = 75 + 60 = 135 g ∴ % b y w t . o f m i x e d s o l u t i o n = 135 450 × 100 = 30 %

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