Principles of Volumetric Analysis

The reaction of  $H_{2}S$ with   $H_2{O}_2$ is an example of _____________ reaction

The reaction of ${\mathrm{H}}_2\mathrm{S}$ with ${\mathrm{H}}_2{\mathrm{O}}_2$ is an example of _____________ reaction.

The volume used for a definite amount of unknown reagent at its equivalence point is known as _____.

Define titre value.

$30 \mathrm{ml}$ solution containing a mixture of ${\mathrm{Na}}_2{\mathrm{CO}}_3$ and $\mathrm{NaOH}$ required $20 \mathrm{ml}$ of $1.5 \mathrm{N} \mathrm{HCl}$ for the phenolphthalein end point and in a separate titration $30 \mathrm{ml}$ of the same mixture required $25 \mathrm{ml}$ of same $\mathrm{HCl}$ when methyl orange used as an indicator for end point. Then find the ratio of number of moles of ${\mathrm{Na}}_2{\mathrm{CO}}_3$ to $\mathrm{NaOH}$ taken in the mixture.

Write the properties of secondary solution?

What is used as secondary standard for standardisation of $\mathrm{HCl}$?

Is $\mathrm{HCl}$ a primary standard and secondary standard explain?

What are secondary standard solutions?

What do you understand by secondary standard solution?

Which of the following can not be a primary standard solution?

What do you understand by secondary standard solution?

What are the types of standard solution?

Standard solution is also called primary standard solution.

What is the aim of standard solution?

What do you mean by standard solution?

${\mathrm{I}}_2$ obtained from $0.1 \mathrm{mol}$ of ${\mathrm{C}\mathrm{u}\mathrm{S}\mathrm{O}}_4$ required $100 \mathrm{ml} \text{of} 1 \mathrm{M}$ hypo solution, hence, mole percentage of pure $\mathrm{C}\mathrm{u}\mathrm{S}{\mathrm{O}}_4$ is

What mass of ${\mathrm{N}\mathrm{a}}_2{\mathrm{S}}_2{\mathrm{O}}_3.5{\mathrm{H}}_2\mathrm{O}$ is needed to make $500 \mathrm{c}{\mathrm{m}}^3$ of $0.200 \mathrm{N}$ solution for the reaction : $\mathrm{ }{2\mathrm{S}}_2\mathrm{ }{\mathrm{O}}_3^{2-}+\mathrm{ }{\mathrm{I}}_2\mathrm{ }⟶\mathrm{ }{\mathrm{S}}_4\mathrm{ }{\mathrm{O}}_6^{2-}\mathrm{ }+\mathrm{ }2{\mathrm{I}}^{-}$

For standardizing $\mathrm{NaOH}$ solution, which of the following is used as a primary standard?

Phenolphthalein is not a good indicator for titrating: