Question

Describe the step by step procedure to prepare $100ml$ of $10\%$ aqueous $NaOH$ solution. Show all your calculations.

Answer 1

Sodium hydroxide is a base with the molecular formula of $NaOH$ . Commercially it will be available as sodium hydroxide crystals or pellets. To prepare aqueous solution of sodium hydroxide the pellets of sodium hydroxide must dissolve in water. $10\%$ aqueous $NaOH$ solution can be prepared by dissolving $10gm$ of $NaOH$ in $100ml$ of water.

Complete answer:
Chemical compounds are classified based on their nature. These are classified into three types namely acid, base and neutral substances. Bases are the chemical compounds that consist of a hydroxide ion or the compounds which are capable of abstraction of protons.
Sodium hydroxide is a strong base as it can easily abstract the proton from the other compounds containing hydrogen atoms. Sodium hydroxide is commercially available as white pellets. The aqueous solution of sodium hydroxide can be prepared by dissolving the pellets in water.
To prepare an aqueous solution from the solid compounds, certain grams of amount must dissolve in $100ml$ of water to obtain that certain percent of solution.
Thus, to prepare $10\%$ aqueous $NaOH$ solution $10gm$ of $NaOH$ should dissolve in $100ml$ of water. The solution obtained is $100ml$ of $10\%$ aqueous $NaOH$ solution.

Note:
While preparing the sodium hydroxide solution, at first sodium hydroxide pellets must dissolve in little amounts of water out of $100ml$ of water. The beaker in which the solution is prepared should be kept in an ice bath as the preparation of the sodium hydroxide solution is an exothermic process which releases a lot of heat.