Answer (A)-
Given,
mass of Iron(II) Chloride = 5.83 g
Excess Silver
Molar Mass of Iron(II) Chloride = 126.751 g/mol
Molar Mass of Iron(II) Nitrate = 179.855 g/mol
Actual Yield of Iron (II) Nitrate = 7.31 g
Theoretical Yield of Iron (II) Nitrate = ?
% Yield = ?
FeCl2 (aq) + 2 AgNO3 (Aq) Fe(NO3)2 (aq) + 2 AgCl (s)
Using Stiochiometry,
It can be analyzed that for 1 mole of FeCl2, 1 mole of Fe(NO3)2 is produced.
So, moles of Fe(NO3)2 is produced = moles of FeCl2
We know that,
Moles = Mass/ Molar Mass
Moles of FeCl2 in 5.83 g = 5.83 g/126.751 g/mol = 0.046 mol
So, moles of Fe(NO3)2 is produced = 0.046 mol
Also,
Mass = Moles *Molar Mass
Mass of Fe(NO3)2 is produced(Theoretical) = 0.046 mol * 179.855 g/mol
Mass of Fe(NO3)2 is produced(Theoretical) = 8.27 g [Answer]
Also,
% Yield = (Actual Yield/Theoretical Yield)*100
% Yield = (7.31 g/8.27g)*100
% Yield = 88.39 % [Answer]
Answer B -
Mass of Hydrogen Gas = 27.2 g
Molar mass of Hydrogen Gas = 2u
Molar mass of Iodine = 253.8089 g/mol
Mas of Iodine required = ?
H2(g) + I2(s)→ 2 HI(g)
Using Stiochiometry,
It can be analyzed that for 1 mole of H2 (g), 1 mole of I2 (g) is required.
So, Moles of I2 (g) required = Moles of H2 (g)
Now,
We know that,
Moles = Mass/ Molar Mass
Moles of H2(g) = 13.6 mol
So, Moles of I2 (g) required = 13.6 mol
Also,
Mass = Moles * Molar Mass
Mass of I2 (g) required = 13.6 mol * 253.8089 g/mol
Mass of I2 (g) required = 3451.80104 g [Answer]
Answer C -
Given,Mass of Oxygen Gas = 26.5 g
Nitrogen Gas Excess
Molar Mass of Oxygen Gas = 32 u
Molar mass of Nitrogen Monoxide = 30.01 g/mol
Mass of Nitrogen monoxide formed= ?
N2 (g)+ O2 (g) 2 NO (g)
Using Stiochiometry,
It can be analyzed that,
For 1 mole of O2, 2 moles of NO are produced.
So, Moles of NO produced = (1/2)* Moles of O2
Also,
Moles = Mass/ molar Mass
Moles of O2 = 26.5 g /32 u
Moles of O2 = 0.828 mol
So, moles of NO produced = (1/2)*0.828 mol
moles of NO produced = 0.414 mol
Also,
Mass = Moles * Molar Mass
So, Mass of NO produced = 0.414 mol * 30.01 g/mol
Mass of NO produced = 12.42 g [Answer]
(A) For the following reaction, 5.83 grams of iron(II) chloride are mixed with excess silver nitrate....
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