Answer to Question #340627 in General Chemistry for mmMWDE

Question

Calculate the percent concentration of each of the following solutions:

a. 2.50 N sodium hydroxide solution (density = 1.25 g/)

b. 4.80 N potassium hydroxide solution (density= 1.30 g/ m/)

Answer 1

we use the following formula to find the percentage concentration:

C_%= (C_N * E)/(p * 10) here,

C_% – percentage concentration;

C_N – normal concentration;

E – equivalent mass of chemical substance;

p – density of the solution.

a) C_% = 2.5 * 40 / 1.25 * 10 = 8 %

ANSWER: 8% NaOH

b) C_% = 4.8 * 56 / 1.3 * 10 = 20.677 %

ANSWER: 20.677% KaOH

ANSWER: a) 8 %

b) 20.667 %