Question

How many liters of a 90% solution of concentrated acid needs to be mixed win a 7%

solution of concentrated acid to get a 30 L solution of 78% concentrated acid? ​

Answer 1

Answer:

the concentration is given which is wrt 100, hence we can take x lt of 90% and (30-x)of 75%

x*90 + (30-x)*75 = 30*78 hence the ans is 6 ltr...

Step-by-step explanation:

hope it will help you....