Verified Solution • 2025–26 Session moderate

QJEEM17Cha6f6: JEE Main 2017 Chemistry - Class 11 JEEM17Cha6f6 Solution: What quantity (in mL) of a 45% acid solution of a mono-protic…

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 ?

Multiple Choice Options

  • A 320
  • B 325
  • C 316
  • D 330

Step-by-Step Verified Solution

Let the volume of a monoprotic acid solution in mL be V

V×45100+(800−V)20100=800×29.875100{{V \times 45} \over {100}} + {{(800 - V)20} \over {100}} = {{800 \times 29.875} \over {100}}

9V20+160−V5=239{{9V} \over {20}} + 160 - {V \over 5} = 239

5V20=79⇒V=316{{5V} \over {20}} = 79 \Rightarrow V = 316 mL

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