Concentration of a Solution

A 5 molar solution of  ${\text{H}}_2\text{S}{\text{O}}_4$ is diluted from 1 litre to a volume of 10 litres, the normality of the resulting solution will be :

Liquid benzene  $\left({\mathrm{C}}_6{\mathrm{H}}_6\right)$ burns in oxygen according to the equation

$2{\mathrm{C}}_6{\mathrm{H}}_6\left(\mathrm{l}\right)+15{\mathrm{O}}_2\left(\mathrm{g}\right)\to 12{\mathrm{CO}}_2\left(\mathrm{g}\right)+6{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)$

How many litres of  ${\mathrm{O}}_2$ at STP are needed to complete the combustion of $39 \mathrm{g}$ of liquid benzene?  $(\mathrm{Molecular}\mathrm{weight}\mathrm{of}{\mathrm{O}}_2=32,{\mathrm{C}}_6{\mathrm{H}}_6=78)$

A $100$ grams of solution contains $25 \mathrm{ml}$ of solute. Calculate volume-mass percent$\left(\raisebox{1ex}{$\mathrm{V}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{W}$}\right.\%\right)$ of the solution.

A $100$ grams of solution contains $25 \mathrm{ml}$ of solute. Calculate volume-mass percent$\left(\raisebox{1ex}{$\mathrm{V}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{W}$}\right.\%\right)$ of the solution.

A $250$ grams of solution contains $30 \mathrm{ml}$ of solute. Calculate volume-mass percent$\left(\raisebox{1ex}{$\mathrm{V}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{W}$}\right.\%\right)$ of the solution.

A $150$ grams of solution contains $25 \mathrm{ml}$ of solute. Calculate volume-mass percent$\left(\raisebox{1ex}{$\mathrm{V}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{W}$}\right.\%\right)$ of the solution.

Define volume to mass percentage with reference to the concentration of a solution.

What is formality? Explain with example.

$100\mathrm{mL}$ of $0.8 \mathrm{M} \mathrm{NaOH}$ is used to neutralise $100 \mathrm{mL}$ of the solution obtained by passing $2.70 \mathrm{g} {\mathrm{SO}}_2{\mathrm{Cl}}_2$ in water. Select the correct statement:

What is the mass of urea required for making $2.5 \mathrm{k}\mathrm{g}$ of $0.25$ molal aqueous solution?

A solution has been prepared by mixing $8.5 \mathrm{mL}$ of ethanol with $80 \mathrm{mL}$ of water. Calculate the volume percentage of the solution.    

$20 \mathrm{g}$ of sodium chloride is dissolved in water to make up the volume of the solution to $250 \mathrm{mL}.$Calculate the mass by volume percentage of sodium chloride in the solution.

A solution contains $15 \mathrm{mL}$of ethyl alcohol mixed with $110 \mathrm{mL}$ of water. Calculate the volume percentage of the solution.   

How many grams of Sodium Chloride is required to make $200 \mathrm{mL}$ aqueous solution of $5\% (\mathrm{w}/\mathrm{v}), \mathrm{NaCl}$.

(Write the final answer without unit)

$22.22 \mathrm{g}$ of urea was dissolved in $300 \mathrm{g}$ of water. Calculate the number of moles of urea and molality of the urea solution.

(Given: Molar mass of urea $= 60 \mathrm{g} {\mathrm{mol}}^{–1}$)

Calculate the mole fraction of sulphuric acid in a solution containing $20\%$ of sulphuric acid by mass.

$3.0 \mathrm{g}$ of oxalic acid $\left[{\left({\mathrm{CO}}_2\mathrm{H}\right)}_2·2{\mathrm{H}}_2\mathrm{O}\right]$ is dissolved in a solvent to prepare a $250 \mathrm{mL}$ solution. The density of the solution is $1.9 \mathrm{g}/\mathrm{mL}$. The molality and normality of the solution, respectively, are closest to

Calculate the mole fraction of ethylene glycol in a solution containing $20\%$ of ethylene glycol by mass.

Unit of mole fraction is

$1$ gram $\mathrm{NaOH}$ is dissolved in $\frac{1}{4} {\mathrm{dm}}^3$ of water. The molarity of solution is _____.