Sodium trioxalatocobaltate (III) trihydrate is prepared by thefollowing reactions: [Co(H2O)6]Cl2 +K2C2O4...
Homework Answers
molar mass of [Co(H2O)6]Cl2 = 59 +6(18) + 2(35.5) = 238 g/mol
n([Co(H2O)6]Cl2) = 12.5 g /238gmol-1
= 0.0525 mol
n(CoC2O4) =n([Co(H2O)6]Cl2 * 1mol ofCoC2O4 / 1mol ofn([Co(H2O)6]Cl2
= 0.0525 mol
n(Na3[Co(C2O4)3]) =n(CoC2O4) * 2mol ofNa3[Co(C2O4)3] / 2molof CoC2O4
= 0.0525 mol
Molar mass ofNa3[Co(C2O4)3] = 3(23)+ 59 + 3(2*12+4*16)
= 392 g/mol
Theorically mass ofNa3[Co(C2O4)3] produced= 392 g/mol * 0.0525 mol
= 20.502g
Percentage yield = 7.6 / 20.502 * 100%
= 37.069%
Add Answer to:
Sodium trioxalatocobaltate (III) trihydrate is prepared by thefollowing reactions: [Co(H2O)6]Cl2 +K2C2O4...
A reaction of 7.20 mL of Iron(III) chloride solution (0.40 g/mL) and 8.95 g of K2C2O4.H2O...
A reaction of 7.20 mL of Iron(III) chloride solution (0.40 g/mL) and 8.95 g of K2C2O4.H2O (Potassium oxalate monohydrate) produced 6.22 g of K3Fe(C2O4)3.3H2O [Potassium trioxalatoferrate(III) trihydrate] A) Calculate number moles of Iron(III) chloride? B)Calculate number moles K2C2O4.H2O (Potassium oxalate monohydrate). C)What is limiting reagent of the reaction (Consider stochiometry)? D)Molar mass of Potassium trioxalatoferrate(III) trihydrate E)Calculate the percent yield of the synthesis?
Questions 1 and 2 please Post-lab Questions (Show logic and calculations for full credit) Sodium trioxalatocobaltate(II)...
Questions 1 and 2 please
Post-lab Questions (Show logic and calculations for full credit) Sodium trioxalatocobaltate(II) trihydrate is prepared by the following reactions: What is the percent yield of (Assume excess amounts of the other reagents.) Na, [Co(C,O) H,O if7.6 g are obtained from 12.5 g of [Co(H,O),JCl,? 2. Why are K,[Cr(C,O,)] 3HsO, K,[Cu(C,O) 3H,O, and K,[Fe(C,o) 3H,O colored, whereas [AI(C,0)J 3H2O is colorless? 3. Predict the magnetic susceptibilities (para- or diamagnetic) and determine the number of unpaired elec- trons...
Refer to this equation: 3 Cl2 + 6 KOH --> KCIO3 + 5 KCI + 3...
Refer to this equation: 3 Cl2 + 6 KOH --> KCIO3 + 5 KCI + 3 H20 12.0 grams of Cl2 is reacted with excess KOH. If 8.70 g of KCl is obtained, what is the percent yield? Hint: find theoretical yield Hint: percent yield = (actual yield/ theoretical yield) x 100 O 62.1% O 51.4 % O 12.5 % O 87.1 % 41.3 % O 15.6 % O 89.0% 97.5%
1b Refer to this equation: 3 Cl2 + 6 KOH --> KCIO3 + 5 KCI +...
1b Refer to this equation: 3 Cl2 + 6 KOH --> KCIO3 + 5 KCI + 3 H20 12.0 grams of Cl, is reacted with excess KOH. If 8.70 g of KCl is obtained, what is the percent yield? Hint: find theoretical yield Hint: percent yield -(actual yield/ theoretical yield) x 100 62.1% 51.4% 12.5 % 87.1% 41.30
Sodium metal is prepared by electrolysis of sodium chloride to the metal and chlorine gas. Using the...
Sodium metal is prepared by electrolysis of sodium
chloride to the metal and chlorine gas. Using the
reduction potentials attached, calculate E° and ΔG° for the overall
reaction.
TABLE 12.2 Standard Reduction Potentials at 25°C Half-reaction Eº, V Increasing strength as oxidizing agent Lit(aq) + e Li(s) K+(aq) + e → KS) Ba2+ (aq) + 2e → Ba(s) Sr2+(aq) + 2e → Sr(s) Ca2+(aq) + 2e → Ca(s) Na*(aq) + e Na(s) Mg2+ (aq) + 2e → Mg(s) Be2+(aq) + 2e...
How many grams of sodium iodide are required to react completely with 3.01 x 1023 molecules...
How many grams of sodium iodide are required to react completely with 3.01 x 1023 molecules of chlorine? 2 NaI + Cl2 ------> I2 + 2 NaCl A. 1.50 g B. 37.5 g C. 150. g D. 74.9 g 1 points QUESTION 2 When 22.0 g of NaOH and 21.0 g of H2SO4 are mixed and react according to the reaction: 2 NaOH + H2SO4 ------> Na2SO4 + 2 H2O, which is the limiting reagent? A. NaOH B. H2SO4 C....
Can someone help answer these? 9. Percent yield a. In an experiment to prepare sodium acetate, the theoretical yie...
Can
someone help answer these?
9. Percent yield a. In an experiment to prepare sodium acetate, the theoretical yield is 105,0 g. If the actual yield is 99.8 g, what is the percent yield? b. You have calculated that you should obtain 567.3 g of Al from Al2O3. You only obtained 492.2 g. What was your percent yield? c. If you should have gotten 98.5 g of CaCO3 from an experiment and this represented a 75.0% yield, what was the...
POSSIBLE POINTS: In part A, the synthesis of hexamminecobalt(III) chloride, [CO(NH3)6]Cly, your reactants included the following....
POSSIBLE POINTS: In part A, the synthesis of hexamminecobalt(III) chloride, [CO(NH3)6]Cly, your reactants included the following. Notice that these are the values given in the manual, and you can assume you measured it out to the same precision given. • 7.5 mL of 1.5M cobalt(II) chloride solution • 0.3 g of solid ammonium chloride • 0.15 g of activated charcoal (a catalyst) • 7.5 mL of 15 M NH3 . and 7.5 mL of 10% hydrogen peroxide. After synthesizing the...
Using the standard reduction potentials listed, calculate the equilibrium constant for each of the following reactions...
Using the standard reduction potentials listed, calculate the
equilibrium constant for each of the following reactions at 298
K.
A) Fe(s)+Ni2+(aq)→Fe2+(aq)+Ni(s)
Express your answer using two significant figures.
B) Co(s)+2H+(aq)→Co2+(aq)+H2(g)
Express your answer using two significant figures.
C) 10Br−(aq)+2MnO−4(aq)+16H+(aq)→2Mn2+(aq)+8H2O(l)+5Br2(l)
Express your answer using two significant figure.
E°(V) -0.83 +0.88 +1.78 +0.79 Half-Reaction E°(V) Half-Reaction Ag+ (aq) + - Ag(s) +0.80 2 H20(1) + 2 e — H2(8) + 2 OH+ (aq) AgBr(s) + - Ag(s) + Br" (aq) +0.10 HO2...
Questions 1 and 2 please
Post-lab Questions (Show logic and calculations for full credit) Sodium trioxalatocobaltate(II) trihydrate is prepared by the following reactions: What is the percent yield of (Assume excess amounts of the other reagents.) Na, [Co(C,O) H,O if7.6 g are obtained from 12.5 g of [Co(H,O),JCl,? 2. Why are K,[Cr(C,O,)] 3HsO, K,[Cu(C,O) 3H,O, and K,[Fe(C,o) 3H,O colored, whereas [AI(C,0)J 3H2O is colorless? 3. Predict the magnetic susceptibilities (para- or diamagnetic) and determine the number of unpaired elec- trons...
Refer to this equation: 3 Cl2 + 6 KOH --> KCIO3 + 5 KCI + 3 H20 12.0 grams of Cl2 is reacted with excess KOH. If 8.70 g of KCl is obtained, what is the percent yield? Hint: find theoretical yield Hint: percent yield = (actual yield/ theoretical yield) x 100 O 62.1% O 51.4 % O 12.5 % O 87.1 % 41.3 % O 15.6 % O 89.0% 97.5%
1b Refer to this equation: 3 Cl2 + 6 KOH --> KCIO3 + 5 KCI + 3 H20 12.0 grams of Cl, is reacted with excess KOH. If 8.70 g of KCl is obtained, what is the percent yield? Hint: find theoretical yield Hint: percent yield -(actual yield/ theoretical yield) x 100 62.1% 51.4% 12.5 % 87.1% 41.30
Sodium metal is prepared by electrolysis of sodium
chloride to the metal and chlorine gas. Using the
reduction potentials attached, calculate E° and ΔG° for the overall
reaction.
TABLE 12.2 Standard Reduction Potentials at 25°C Half-reaction Eº, V Increasing strength as oxidizing agent Lit(aq) + e Li(s) K+(aq) + e → KS) Ba2+ (aq) + 2e → Ba(s) Sr2+(aq) + 2e → Sr(s) Ca2+(aq) + 2e → Ca(s) Na*(aq) + e Na(s) Mg2+ (aq) + 2e → Mg(s) Be2+(aq) + 2e...
Can
someone help answer these?
9. Percent yield a. In an experiment to prepare sodium acetate, the theoretical yield is 105,0 g. If the actual yield is 99.8 g, what is the percent yield? b. You have calculated that you should obtain 567.3 g of Al from Al2O3. You only obtained 492.2 g. What was your percent yield? c. If you should have gotten 98.5 g of CaCO3 from an experiment and this represented a 75.0% yield, what was the...
POSSIBLE POINTS: In part A, the synthesis of hexamminecobalt(III) chloride, [CO(NH3)6]Cly, your reactants included the following. Notice that these are the values given in the manual, and you can assume you measured it out to the same precision given. • 7.5 mL of 1.5M cobalt(II) chloride solution • 0.3 g of solid ammonium chloride • 0.15 g of activated charcoal (a catalyst) • 7.5 mL of 15 M NH3 . and 7.5 mL of 10% hydrogen peroxide. After synthesizing the...
Using the standard reduction potentials listed, calculate the
equilibrium constant for each of the following reactions at 298
K.
A) Fe(s)+Ni2+(aq)→Fe2+(aq)+Ni(s)
Express your answer using two significant figures.
B) Co(s)+2H+(aq)→Co2+(aq)+H2(g)
Express your answer using two significant figures.
C) 10Br−(aq)+2MnO−4(aq)+16H+(aq)→2Mn2+(aq)+8H2O(l)+5Br2(l)
Express your answer using two significant figure.
E°(V) -0.83 +0.88 +1.78 +0.79 Half-Reaction E°(V) Half-Reaction Ag+ (aq) + - Ag(s) +0.80 2 H20(1) + 2 e — H2(8) + 2 OH+ (aq) AgBr(s) + - Ag(s) + Br" (aq) +0.10 HO2...
Most questions answered within 3 hours.
-
The fact that there are high cache miss rates for programs with
binary executables of 100s...
asked 1 minute from now -
ACME manufacturing is a low-cost producer of a single, commodity
product: RGL-01. Standard overhead cost information...
asked 29 seconds ago -
answer the below qestion in term of marketing in “personal
selling steps”
( Question )
Consider...
asked 20 minutes ago -
Why
are large,multinational firms more likely to be concerned about
CSR?Why are lifestyle brands more susceptible...
asked 19 minutes ago -
Under normal use conditions, the Mean Time To Failure of a
heating coil can be modeled...
asked 22 minutes ago -
A student holds a ruler by one end (x=0 where the student holds
it). The student...
asked 22 minutes ago -
People are most likely to believe their ancestors play an active
role in their lives in...
asked 22 minutes ago -
A speeding car is traveling along a straight road with a
constant speed of 100 km/hour....
asked 40 minutes ago -
When 60.1 gg of calcium is reacted with nitrogen gas, 31.7 gg of
calcium nitride is...
asked 44 minutes ago -
The random variable X is exponentially distributed, where X
represents the time it takes for a...
asked 59 minutes ago -
a) Write a verilog module for 1:4 Demultiplexer using verilog
primitives.
b) Design 1-to-4 DEMUX using...
asked 54 minutes ago -
MATLAB
write a MATLAB function (1) output a third-order polynomial
function with the coefficients as the...
asked 1 hour ago