The mole percent of urea in 0.5 m aqueous solution of urea is
Answers
Answer:
molality of aqueous solution of urea is 0.5m
it means, 0.5 mole of urea present in 1 kg of water (solvent).
mass of water = 1kg or 1000g
molar mass of water = 18g/mol
so, number of mole of water = 1000/18 = 55.5 mol
so, no of mole of solution = no of mole of urea + no of mole of water
= 0.5 mol + 55.5 mol
= 56 mol
mole- percent of urea = no of mole of urea in solution/(no of mole of solution ) × 100
= 0.5/56 × 100
= 50/56
≈ 0.89 %
hence, 0.89 % of urea present in 0.5m aqueous solution of urea.
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Answer:
molality of aqueous solution of urea is 0.5m
it means, 0.5 mole of urea present in 1 kg of water (solvent).
mass of water = 1kg or 1000g
molar mass of water = 18g/mol
so, number of mole of water = 1000/18 = 55.5 mol
so, no of mole of solution = no of mole of urea + no of mole of water
= 0.5 mol + 55.5 mol
= 56 mol
mole- percent of urea = no of mole of urea in solution/(no of mole of solution ) × 100
= 0.5/56 × 100
= 50/56
≈ 0.89 %
hence, 0.89 % of urea present in 0.5m aqueous solution of urea.
Hope it helps you
Pls mark brainliest
Have a great day