Question : A 100 ml solution of H2SO4 having a concentration of 20% is mixed with a 50% concentrated $x$ ml mixture such that the net mixture is 30% concentrated. Determine $x$.
Option 1: 70 ml
Option 2: 80 ml
Option 3: 60 ml
Option 4: 50 ml
Correct Answer: 50 ml
Solution :
Given, A 100 ml solution of H
2
SO
4
having a concentration of 20% is mixed with a 50% concentrated $x$ ml mixture such that the net mixture is 30% concentrated.
Here, 2 units correspond to 100 ml.
So, 1 unit corresponds to 50 ml.
Hence, the correct answer is 50 ml.
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