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Question: Answered & Verified by Expert
One litre of $0.15 \mathrm{M} \mathrm{Na}_2 \mathrm{SO}_3$ aqueous solution is mixed with $500 \mathrm{~mL}$ of $0.2 \mathrm{M} \mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ aqueous solution in acid medium. What is the concentration (in $\mathrm{mol} \mathrm{L}^{-1}$ ) of unreacted $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ in the resultant solution?
ChemistryRedox ReactionsAP EAMCETAP EAMCET 2017 (26 Apr Shift 2)
Options:
  • A 1. $\frac{1}{3}$
  • B $\frac{1}{20}$
  • C $\frac{1}{300}$
  • D $\frac{1}{30}$
Solution:
2818 Upvotes Verified Answer
The correct answer is: $\frac{1}{30}$
No solution. Refer to answer key.

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