Question

sodium hydroxide purity test method?​

Answer 1

Answer:

Weigh accurately about 2 g, dissolve in about 80 ml of carbon dioxide-free water, add 0.3 ml of phenolphthalein solution and titrate with 1M hydrochloric acid. ... Each ml of 1M hydrochloric acid used in the combined titrations is equivalent to 0.0400 g of total alkali, calculated as NaOH.

Answer 2

Explanation:

Weigh accurately about 2 g, dissolve in about 80 ml of carbon dioxide-free water, add 0.3 ml of phenolphthalein solution and titrate with 1M hydrochloric acid. ... Each ml of 1M hydrochloric acid used in the combined titrations is equivalent to 0.0400 g of total alkali, calculated as NaOH.