Question

What quantity of 72% acetic acid solution must be mixed with a 16% acetic acid solution to produce 141.78 mL of 63% solution?

Answer 1

The quantity of 72% of acetic acid is 123.83 ml

Explanation:

Given as :

The produce quantity after mixing = 141.78 ml of 63%

Let The quantity of 72% of acetic acid = x ml

72% of acetic acid mix with 16% acetic acid

Now, According to question

72% of acetic acid × quantity of 72% of acetic acid + 16% acetic acid = The produce quantity after mixing

Or,
`(72)/(100)` × x ml +
`(16)/(100)` = 141.78 ml ×
`(63)/(100)`

Or, 72 x + 16 = 8932.14

Or, 72 x = 8932.14 - 16

Or, 72 x = 8916.14

∴ x =
`(8916.14)/(72)`

i.e x = 123.83 ml

So, The quantity of 72% of acetic acid = x = 123.83 ml

Hence, The quantity of 72% of acetic acid is 123.83 ml Answer