Question

Consider again the solution made by diluting 10.0 mL of the 0.50 M NaCl by adding distilled water until 100 mL of solution are produced. Has the concentration of the diluted salt solution increased, decreased, or remained constant? increased decreased remained constant

Answer 1

The concentration of the diluted salt solution decreased

Step-by-step explanation:

When a solution is diluted the concentration of then solution decreases and the volume of the solvent increases.

In this case;

The initial concentration is 0.50 M

The initial volume is 10.0 mL

The volume after dilution is 100 mL

We are required to determine the change in the final concentration;

According to the dilution equation;

M1V1 = M2V2

M2 = M1V1 ÷ V2

Therefore;

M2 = (0.5 M × 10.0 mL) ÷ 100mL

= 0.05 M

Therefore, the concentration of the solution decreased after dilution.