an engineer chooses to use a composite material that incorporates concrete and recycled glass for the floors of a new building.
2 answers:
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Mass of Al₂(SO₄)₃ : 4.822 g
<h3>Further explanation </h3>A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.
Reaction
2AlCl₃ + 3(NH₄)₂SO₄⇒Al₂(SO₄)₃+ 6NH₄Cl
MW AlCl₃ :133,34 g/mol
MW (NH₄)₂SO₄ : 132,14 g/mol
MW Al₂(SO₄)₃ : 342,15 g/mol
mol AlCl₃
mol (NH₄)₂SO₄
Limitng reactants (ratio mol : coefficient = the smaller)
AlCl₃ : (NH₄)₂SO₄ =
(NH₄)₂SO₄ ⇒ limiting reactants
So mol Al₂(SO₄)₃ from (NH₄)₂SO₄
mass Al₂(SO₄)₃
with 54.2% yield, the mass of Al₂(SO₄)₃
Answer:
M = 0.011
Half reactions for reduction and oxidation:
oxidation:
HC12H6Cl2O2N + NH+ +2e- = HC12H8Cl2O2N
reduction:
C6H8O6 = C6H6O6 + 2H+ + 2e-
Explanation:
Molarity of the ascorbic acid solution:
Ascorbic acid molar mass = 173.12 g/mol
Then you have to find the mols:
mol = 2g/176,12 =0.011 mol Ascorbic acid.
Use the molarity equation:
Molarity (M) = 0.011 mol / 1 L = 0.011 M
Reactions for the reduction of DCPIP by ascorbic acid:
These reactions have to be balanced by the oxide reduction method.
Because it involves the transfer of electrons from ascorbic acid to the DCPIP.
Remember: when is happens a reduction, also happens oxidation.
To see the reactions watch the images attached.
The first one has the calculus for the molarity of the ascorbic acid solution.
The second one has the reactions for the reduction and oxidation of the compounds.
