Question

what is the molarity of a solution that contains 2.5 moles of solute dissolved in 125 ml of solution?

Answer 1

`\huge{ \boxed{ \boxed{20 \: M}}}`

Step-by-step explanation:

The molarity of the solution given its volume and number of moles can be found by using the formula;

`c = (n)/(v) \\`

where

c is the concentration in M , mol/dm³ or mol/L

v is the volume in L or dm³

n is the number of moles

From the question

n = 2.5 mol

v = 125 ml

Using the conversion

1000ml = 1 L

125ml = 0.125 L

`c = (2.5)/(0.125) = 20 \\`

We have the final answer as

20 M