Question

to make a saturated solution 40 gram of sodium chloride is dissolved in 100of water at 293k . find its consentration at its ​

Answer 1

Correct question:

To make a saturated solution, 40g of sodium chloride is dissolved in 100g of water at 293K. Find its concentration at this temperature.

Given:

• Mass of Sodium Chloride (NaCl) = 40 g
• Mass of water = 100 g
• Temperature = 293K or 20° C

To find:

• Concentration of the solution at the given temperature.

Solution:

In order to find the concentration of a solution, when mass of solute and solution (or solvent) is given, we use the following formula:

$\boxed {\sf {\red {Concentration\ of\ solution = \dfrac {Mass\ of\ solute}{Mass\ of\ solution} \times 100 \%}}}$

Here, NaCl is the solute and water is the solvent.

Mass of Solute = 40 g

Mass of solution = (100+40) g

= 140 g

Substitute the values in the formula,

$\sf {Concentration\ of\ solution = \dfrac {40}{140} \times 100 \%}$

$\dag {\boxed {\bf {\blue {Concentration\ of\ solution = 28.57 \%}}}}$

Concentration of solution:

Concentration of the solution at the given temperature is 28.57%.

Answer 2

Step-by-step explanation:

Correct question:

To make a saturated solution, 40g of sodium chloride is dissolved in 100g of water at 293K. Find its concentration at this temperature.

Given:

Mass of Sodium Chloride (NaCl) = 40 g

Mass of water = 100 g

Temperature = 293K or 20° C

To find:

Concentration of the solution at the given temperature.

Solution:

In order to find the concentration of a solution, when mass of solute and solution (or solvent) is given, we use the following formula:

\boxed {\sf {\red {Concentration\ of\ solution = \dfrac {Mass\ of\ solute}{Mass\ of\ solution} \times 100 \%}}}

Concentration of solution=

Mass of solution

Mass of solute

×100%

Here, NaCl is the solute and water is the solvent.

Mass of Solute = 40 g

Mass of solution = (100+40) g

= 140 g

Substitute the values in the formula,

\sf {Concentration\ of\ solution = \dfrac {40}{140} \times 100 \%}Concentration of solution=

140

40

×100%

\dag {\boxed {\bf {\blue {Concentration\ of\ solution = 28.57 \%}}}}†

Concentration of solution=28.57%

Concentration of solution:

Concentration of the solution at the given temperature is 28.57%.