Question

A solution is prepared by dissolving 1g of NaOH in water to get 250ml of Solution.Calculate its molarity.​

Answer 1

Answer:-

Gram molecular mass of NaOH:-

$\\ \sf\longmapsto 23+16+1$

$\\ \sf\longmapsto 23+17$

$\\ \sf\longmapsto 40g$

We know that

$\boxed{\sf Molarity=\dfrac{W_A}{M_B}\times \dfrac{1000}{V_{Solution}mL}}$

$\\ \sf\longmapsto Molarity=\dfrac{1}{40}\times \dfrac{1000}{250}$

$\\ \sf\longmapsto Molarity=0.1M$