Question

Rank the solutions from least to most concentrated

solution a: 4.50 g solute in 400 mL solution
solution b: 4.50 g solute in 800mL solution
solution c: 2.25 g solute in 800 mL solution

Answer 1

C < B < A

Step-by-step explanation:

The concentration of each solution can be calculated using the formula:

`c=(m)/(V)`

where

m is the mass of the solute

V is the volume of the solution

For solution A:

m = 4.50 g

V = 400 mL

So the concentration is

`c_A=(4.50)/(400)=0.0113 g/mL`

For solution B:

m = 4.50 g

V = 800 mL

So the concentration is

`c_B=(4.50)/(800)=0.0056 g/mL`

For solution C:

m = 2.25 g

V = 800 mL

So the concentration is

`c_C=(2.25)/(800)=0.0028 g/mL`

We see that

`c_C<c_B<c_A`

So the order from least to most concentrated is:

C < B < A