solution a. Calculate the number of moles of Fe and SCN added. b. Calculate the number of moles of FeNCS?* formed. c. Calculate the number of moles of each reactant present at equilibrium. moles at equilibrium initial moles - moles used up d. Calculate the concentrations of all specieos at oquilihrium

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Chapter1: Chemical Foundations
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An Equilibrium Constant
1. Refer to Table 2, test solution 3 in the procedure. At equilibrium, the concentration of the FENCS“ is
determined to be 1.5 x 104 M in 10.0 mL total volume of solution.
a. Calculate the number of moles of Fe3 and SCN added.
b. Calculate the number of moles of FeNCS2 formed.
c. Calculate the number of moles of each reactant present at equilibrium.
moles at equilibrium = initial moles - moles used up
d. Calculate the concentrations of all species at equilibrium.
e. Calculate K.
Vol. of 0.002 M
Fe(NOs)s (mL)
Vol. of 0.002 M
NaSCN (mL)
Vol. of 0.1 M
HNO3 (mL)
Absorbance at
447 nm
Test Solution
0.328
3
college
ruled
compositic
avaderno para composiciones con raya
2.
Transcribed Image Text:An Equilibrium Constant 1. Refer to Table 2, test solution 3 in the procedure. At equilibrium, the concentration of the FENCS“ is determined to be 1.5 x 104 M in 10.0 mL total volume of solution. a. Calculate the number of moles of Fe3 and SCN added. b. Calculate the number of moles of FeNCS2 formed. c. Calculate the number of moles of each reactant present at equilibrium. moles at equilibrium = initial moles - moles used up d. Calculate the concentrations of all species at equilibrium. e. Calculate K. Vol. of 0.002 M Fe(NOs)s (mL) Vol. of 0.002 M NaSCN (mL) Vol. of 0.1 M HNO3 (mL) Absorbance at 447 nm Test Solution 0.328 3 college ruled compositic avaderno para composiciones con raya 2.
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