Question

How many gm of NaOH required to prepare
10% w/v 100 ml NaOH solution ?​

Answer 1

Answer:

2.5 gram

Explanation:

10% by w/v means 10gram in 100ml of solution

molarity = given mass× 1000 /

molar mass × volume of solution

given mass = 10g

molar mass of naoh = 23+16+1 = 40 gram

volume if solution=. 100ml

molarity = 10×1000/ 40×100 = 2.5 gram