student a dissolves 20 g of sugar in 80 g of water. – Discussion Forum

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Virat

Asked: August 24, 2026In: Class 9 Science

Three students, A, B and C, are preparing sugar solutions for an experiment: Student A dissolves 20 g of sugar in 80 g of water. Student B dissolves 20 g of sugar in 100 g of water. Student C dissolves 30 g of sugar in 80 g of water. (i) Calculate the mass percentage (% m/m) concentration of sugar in each student’s solution. (ii) Whose solution is the most concentrated? Explain why.

Student A has 20 percent sugar, Student B has 16.67 percent and Student C has 27.27 percent by mass. Therefore, Student C has the most concentrated solution because it contains the highest percentage of sugar.