How do you standardize a NaOH solution?

To Standardize:

1. Transfer 25.00 mL (measured with a calibrated pipette) into a 250 mL Erlenmeyer flask and dilute with an equal volume of water.
2. Add 1 M NaOH to raise the pH to 12 (measure with a pH meter or pH paper).
3. Add 4-8 drops of hydroxynaphthol blue indicator to the solution and record the color.

What is the purpose of standardizing a solution?

Standardization is used to determine the exact concentration of a prepared solution. Titrations are used to determine the unknown concentrations of samples. Most often, standardization is also done as a titration.

Why is it necessary to standardize the NaOH titrant?

Sodium hydroxide is a strong base. Standardization of NaOH is performed by titrating it with a primary standard. From standardization, the exact concentration of prepared NaOH can be determined. From this concentration, the concentration of unknown acid can be determined by using the dilution equation.

What is meant by Standardisation?

Standardization or standardisation is the process of implementing and developing technical standards based on the consensus of different parties that include firms, users, interest groups, standards organizations and governments.

What does Standardisation mean in chemistry?

Standardization is the process of determining the exact concentration (molarity) of a solution. Titration is one type of analytical procedure often used in standardization. In a titration, an exact volume of one substance is reacted with a known amount of another substance.

What is the meaning of normality in chemistry?

Normality (N) is defined as the number of mole equivalents per liter of solution:normality = number of mole equivalents/1 L of solution. Like molarity, normality relates the amount of solute to the total volume of solution; however, normality is specifically used for acids and bases.

Why is KHP used to standardize NaOH?

Standardization is typically carried out by titrating the NaOH solution with a primary standard, an ultra-pure, easily soluble acid such as potassium hydrogen phthalate (KHP). Unlike NaOH, KHP can be used to prepare a solution whose concentration is known with a high degree of precision.

How do you standardize a solution?

To prepare a standard solution, a known mass of solute is dissolved and the solution is diluted to a precise volume. Standard solution concentration is usually expressed in terms of molarity (M) or moles per liter (mol/L).

What is 1 molar NaOH?

In simple words, 1 mole is equal to the atomic weight of the substance. For example, 1 mole of Sodium hydroxide is equal to 40.00 grams of Sodium hydroxide (NaOH, molecular weight = 40.00).