In a standardization of an unknown sodium hydroxide solution, 0.256g of KHP reacts with exactly 22.62 mL of the unknown sodium hydroxide solution. What is the molarity of the unknown solution

Molarity of NaOH solution is 0.0553 M.

Explanation:

To calculate the number of moles, we use the equation:

Given mass of KHP = 0.256 g

Molar mass of KHP = 204.22 g/mol

Putting values in above equation, we get:

The chemical reaction follows the equation:

By Stoichiometry of the reaction:

1 mole of KHP reacts with 1 mole of NaOH.

So, 0.00125 moles of KHP will react with = moles of NaOH.

To calculate the molarity of NaOH, we use the equation:

We are given:

Moles of NaOH = 0.00125 moles

Volume of solution = 22.62 mL

Putting values in above equation, we get:

Hence, the molarity of NaOH solution is 0.0553 M.

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