Answer:
185.0 mL of K₂Cr₂O₇ 0.600 M solution
Explanation:
Having the equation balanced in the statement, it is calculated based on the stoichiometric ratio of it, how many moles do I need from K₂Cr₂O₇ to be able to generate 0.1665 moles of C₂H₄O₂
3 moles C₂H₄O₂ _____ 2 moles K₂Cr₂O₇
0.1665 moles C₂H₄O₂ _____ X = 0.111 moles of K₂Cr₂O₇
Calculation: 0.1665 moles x 2 moles / 3 moles = 0.111 moles of K₂Cr₂O₇
Now the volume of solution of K₂Cr₂O₇ that contains the amount of moles calculated above is calculated, as stated in the molar concentration (0.600M), it is calculated:
0.600 moles of K₂Cr₂O₇ _____ 1000 mL solution
0.111 moles of K₂Cr₂O₇ _____ X = 185.0 mL of solution
Calculation: 0.111 moles x 1000 mL / 0.600 moles = 185.0 mL of solution
Therefore, to generate 0.1665 moles of C₂H₄O₂, 185.0 mL of K₂Cr₂O₇ 0.600 M solution is needed.