Reactions in Solutions

Residue is a substance that dissolves a solute to form a solution.

A substance that dissolves a solute to form a solution is called as:

_____ is a substance that dissolves a solute to form a solution.

Amount of Oxalic acid ${\left(\mathrm{COOH}\right)}_2.2{\mathrm{H}}_2\mathrm{O}$, in grams required to prepare $200 \mathrm{mL}$ of $0.5 \mathrm{M}$ oxalic acid solution is _____.

Amount of Oxalic acid ${\left(\mathrm{COOH}\right)}_2.2{\mathrm{H}}_2\mathrm{O}$, in grams required to prepare $200 \mathrm{mL}$ of $0.5 \mathrm{M}$ oxalic acid solution is _____.

In a salt water solution, salt is considered the solute

What is a solute?

What is the substance called that dissolves the other substance in a solution?

Amount of Oxalic acid ${\left(\mathrm{COOH}\right)}_2.2{\mathrm{H}}_2\mathrm{O}$, in grams required to prepare $200 \mathrm{mL}$ of $0.5 \mathrm{M}$ oxalic acid solution is _____ $\mathrm{g}$.($12.6$/$1.26$)

How many moles of solute particles are present in one litre of ${10}^{-4} \mathrm{M}$ potassium sulphate? (assume ${\mathrm{K}}_2{\mathrm{SO}}_4$ does not dissociate.)

$\left(0.0001 / 0.001 / 0.01\right)$

Which of the following solutions have the same concentration?

Calculate the molarity of a solution of ethanol in water, in which the mole fraction of ethanol is $0.040$.
(Assume the density of water to be one).
(Provide correct answer upto $2$ decimal places and no need to mention units.)

A quantity of $720 \mathrm{g}$ water is added in $230 \mathrm{g}$ of ethanol at a certain temperature to get a solution of density $950 \mathrm{kg} {\mathrm{m}}^{-3}$. Which of the following is/are correct regarding the solution formed?

$3 \mathrm{g}$ of salt of molecular mass $30$ is dissolved in $250 \mathrm{mL}$ of water. The molarity of the solution is _____$\mathrm{mol}/\mathrm{L}$. $\left(0.4/0.04/0.1\right)$

$3 \mathrm{g}$ of a salt of molecular mass is $30$. $250 \mathrm{ml}$ is dissolved in $250 \mathrm{ml}$ of water. The molarity of the solution is _____.

100 ppm (w/w) of He (by mass) is present in an Ar sample at $0^{o}C$ , in a rigid 22.4 L vessel. Which of the following units remain unchanged as the temperature is raised to ${100}^{o}C?$

$8g NaOH$ present in $18g$ of water. Determine mole fraction of $NaOH$ and molality

The weight of ${\mathrm{Na}}^{+}$ in the solution of ${\mathrm{Na}}_2{\mathrm{SO}}_4$ is $92g$ . Find molality of ${\mathrm{Na}}^{+}$ per kg of water?

8.50 gram of $N{H}_3$ is present in $250 mL$ volume. Its active mass is

A sample of $\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$ weighing $0.38\mathrm{ }\mathrm{g}$ is dissolved in water and the solution is made to $50.0\mathrm{ }\mathrm{m}\mathrm{L}$ in a volumetric flask. What is the molarity of the resulting solution?