Using equations we know that approximately 8 liters of water must be added in order to produce a 30% acid solution.
So, we know that:
Liters of water: x
25% of solution: 0.25 × 50
30% of solution: 0.30 (50 + x)
Now, form equations and calculate as follows:
0.25 × 50 = 0.30 (50 + x)
12.5 = 15 + 0.30x
15 + 0.30x = 12.5
15 + 0.30x - 15 = 12.5 -15
0.30x = -2.5
.030x/.30 = -2.5/.30
x = - 8.33
Since we can't add water in negative, hence it will be +.
Rounding off: 8 liters
Therefore, using equations we know that approximately 8 liters of water must be added in order to produce a 30% acid solution.
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