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What quantity (in mL) of a 45% acid solu...

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?

A

320

B

325

C

316

D

330

Text Solution

Verified by Experts

The correct Answer is:
C
`(V xx 45)/(100)+((800-V) xx 20)/(100)=(800 xx 29.875)/(100)`
`implies (9V)/(20)+160-(V)/(5)=239 implies V = 316`
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