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

Answer:

C < B < A

Explanation:

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

$c=\frac{m}{V}$

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

$c_A=\frac{4.50}{400}=0.0113 g/mL$

For solution B:

m = 4.50 g

V = 800 mL

So the concentration is

$c_B=\frac{4.50}{800}=0.0056 g/mL$

For solution C:

m = 2.25 g

V = 800 mL

So the concentration is

$c_C=\frac{2.25}{800}=0.0028 g/mL$

We see that

$c_C<c_B<c_A$

So the order from least to most concentrated is:

C < B < A