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Why do you need to standardize NaOH solution?

Why do you need to standardize NaOH solution?

But when it comes to anything analytical where you start to involve calculations, standardization is a must. This is done with NaOH because it’s hygroscopic and readily sucks up the moisture in the air. So what is being weighed isn’t totally NaOH, but also the moisture that it has absorbed.

What is meant by standardization of any solution?

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 volumetric solution?

volumetric solution one that contains a specific quantity of solvent per stated unit of volume.

How do you prepare a volumetric solution?

Dilute 9.0 mL of hydrochloric acid to 1000 mL with aldehyde–free alcohol. Dissolve about 14 g of iodine in a solution of 36 g of potassium iodide in 100 mL of water, add 3 drops of hydrochloric acid, dilute with water to 1000 mL, and standardize the solution as follows.

Why is volumetric analysis used?

It is commonly used to determine the unknown concentration of a known reactant. Volumetric analysis is often referred to as titration, a laboratory technique in which one substance of known concentration and volume is used to react with another substance of unknown concentration.

How many types of volumetric analysis are there?

Volumetric analysis can further be classified into 3 techniques depending on the nature of reactions: Acid-Base titrations which involve the reaction of an acid and a base. Redox titrations which includes redox reaction between analyte and titrant as the key reaction.

What is used in volumetric analysis?

Volumetric analysis, any method of quantitative chemical analysis in which the amount of a substance is determined by measuring the volume that it occupies or, in broader usage, the volume of a second substance that combines with the first in known proportions, more correctly called titrimetric analysis (see titration) …

What are indicators why do we use it give examples?

Certain naturally occurring substances can also act as indicators as they change colour according to the nature of substance. Example: Red cabbage juice. The other indicators used are litmus, methyl orange and phenolphthalein.