Hydrochloric acid

Determine the concentration of which must have a solution of hydrochloric acid that mixes 10 l of the solution with 8 liters of 26% solution to get the solution with a concentration of 50%.

Correct answer:

x =  69.2 %

Step-by-step explanation:


10·x/100+8·0.26=0.50·(10+8)

10x = 692


x = 692/10 = 69.2

x = 346/5 = 69.2

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