Answer to Question #109377 in General Chemistry for Rodaina

Question

2. A solution with a concentration of 20% is diluted 1/10 and then again by 1/10. Find the final percent concentration.

Answer 1

20% solution means in 100 ml solution solute present is 20 unit.

Now for the two times dilution of the solution the amount of solution is now 10000 ml and the solute present is 20 unit.

Now the strength if the solution is = (20*100)/10000

=0.2%