20.40g Iron(III) oxalate is dissolved in enough water to give 250.0 ml of soluti
ID: 890834 • Letter: 2
Question
20.40g Iron(III) oxalate is dissolved in enough water to give 250.0 ml of solution. 25.00 ml of this solution is pipetted into a 100.0ml volumetric flask and diluted to the mark.A. Calculate the molarity of Iron(III) oxalate in the original solution.
B. Calculate the molarity of the oxalate ion in the diluted solution.
20.40g Iron(III) oxalate is dissolved in enough water to give 250.0 ml of solution. 25.00 ml of this solution is pipetted into a 100.0ml volumetric flask and diluted to the mark.
A. Calculate the molarity of Iron(III) oxalate in the original solution.
B. Calculate the molarity of the oxalate ion in the diluted solution.
A. Calculate the molarity of Iron(III) oxalate in the original solution.
B. Calculate the molarity of the oxalate ion in the diluted solution.
Explanation / Answer
molarmass of Fe2(C2O4)3 = 375.747 g/mol
VOLUME OF SOLUTION = 250 ml = 0.25 L
Molarity = w/mwt*1/V in L
w = 40 grams , Mwt = 375.747 g/mol
V = 0.25 L
Molarity = (40/375.747)*(1/0.25)
= 0.426 M
A. the molarity of Iron(III) oxalate in the original solution. = 0.426 M
B . molarity of the oxalate ion in the diluted solution.
M1V1 = M2V2
M1 = 0.426 M , V1 = 25 ml
M2 = ? v2 = 100 ml
M2 = M1V1/V2 = 0.426*25/100 = 0.1065 M
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.