A teacher told three students A, B and C to prepare 25% solution (mass by volume) of KOH. Student A dissolved 25 g of KOH in 100g of water, student B dissolved 25 g of KOH in 100 ml of water and student C dissolved 25g KOH in water and made the volume 100 ml. Which one of them has made required 25% solution ? Give your answer with reason.
CBSE Class IX Science SA 2 (3 Marks)
Answers
Answered by
106
Student C
Solution-25 gm of KOH in water and the volume of the solution is 100 ml.
Mass by volume percentage of solution = Mass of solute x 100 = 25(g) x 100
Volume of solution 100 ml
Detailed Answer :
Student C made the required 25% solution. 25 gm of KOH in water and the volume of the solution is 100 ml.
Mass by volume percentage of a solution = ____ Mass of solute x 100
Volume of solution
25(g) / 100 ml x 100 = 25%
Answered by
0
Answer:
Student C
Explanation:
Solution-
25 gm of KOH in water and the volume of the solution is 100 ml.
Mass by volume percentage of solution = Mass of solute x 100 = 25(g) x 100
Volume of solution 100 ml
Detailed Answer :
Student C made the required 25% solution. 25 gm of KOH in water and the volume of the solution is 100 ml.
Mass by volume percentage of a solution = ____ Mass of solute x 100
Volume of solution
25(g) / 100 ml x 100 = 25%
Similar questions