Question

How many moles of sucrose are dissolved in 250 mL of solution if the solution concentration is 0.150 M?

Answer 1

Answer:

plz refer to the attachment above ......

Answer 2

Given,

The concentration of a solution = 0.15 M

To find,

The number of moles of sucrose dissolved in 250 mL of solution.

Solution,

We can simply solve this numerical problem by using the following process:

Let us assume that x moles of sucrose is dissolved in 250 mL of solution.

Mathematically,

The concentration of a solution

= molarity of the solution

= (moles of solute)/(volume of the solution in L)

{Statement-1}

According to the question;

The concentration of a solution = 0.15 M

=> Molarity of the solution = 0.15 M

=> (moles of solute)/(volume of the solution in L) = 0.15 M

=> (x moles)/(250 mL) = 0.15 M

=> (x moles)/(250/1000 L) = 0.15 M

=> (x moles)/(1/4 L) = 0.15 M

=> x = (1/4) × 15/100 = 3.75/100

=> x = 0.0375 moles

=> 0.0375 moles of sucrose is dissolved in 250 mL of solution

Hence, 0.0375 moles of sucrose is dissolved in 250 mL of solution.