Question

What quantity (in mL) of a 45% acid solution of a
mono-protic strong acid must be mixed with a 20%
solution of the same acid to produce 800 mL of a
29.875% acid solution ? Online 2017 SET (2)
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Answer 1

Answer:

Sorry I don't know this answer of this question or please write carefully

Answer 2

Question:

What quantity (in ml) of a 45% acid solution of a mono-protic strong acid must be mixed with a 20% solution of the same acid to produce 800 ml of a 29.875% acid solution ?

Solution:

Let volume of 1st solution = Vml

Then, Volume of 2nd solution = (800–V) mL

We know,

Amount of acid in 1st solution + Amount of acid in 2nd solution = Amount of acid in obtained solution.

45V/100 + 20(800-V) / 100 = 29.875(800)/100

On, solving, we obtain the values of V as:

V = 316 ml