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romanna [79]
4 years ago
14

Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [H2]eq = 0.14 M, [I2]eq =

0.39 M, [HI]eq = 1.6 M. H2(g) + I2(g) ⇌ 2 HI(g)
Chemistry
1 answer:
My name is Ann [436]4 years ago
6 0

Answer:

47

Explanation:

Let's consider the following reaction at equilibrium.

H₂(g) + I₂(g) ⇌ 2 HI(g)

The concentration equilibrium constant (Kc) is the product of the concentrations of the products raised to their stoichiometric coefficients divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients.

Kc = [HI]² / [H₂] × [I₂]

Kc = (1.6)² / 0.14 × 0.39

Kc = 47

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The moles of water that are produced from 373 moles of ammonia present in any chemical reaction is 746 moles.

<h3>What is the stoichiometry?</h3>

Stoichiometry of the reaction gives idea about the amount of entities present in any chemical reaction before and after the reaction.

Given chemical reaction is:

3Al + 3NH₄ClO₄ → Al₂O₃ + AlCl₃ + 3NO + 6H₂O

From the stoichiometry of the reaction it is clear that:

3 moles of Al = produces 6 moles of H₂O

373 moles of Al = produces 6/3×373 = 746 moles of H₂O

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To know more about stoichiometry, visit the below link:

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6 0
2 years ago
A 7.50 liter sealed jar at 18 degrees C contains 0.125 moles of oxygen and 0,125 moles of nitrogen gas. What is the pressure in
LiRa [457]
PV = nRT —> P = nRT/V
n = 0.250 moles of gas
R = 0.08206 L atm / mol K
T = 18 + 273 = 291 K
V = 7.50 L

P = (0.250)(0.08206)(291)/(7.50) = 7.96 atm
6 0
3 years ago
Please help. Is it A. <br> B. <br> C. <br> Or <br> D.?
Serga [27]

Answer:

C

Explanation:

5 0
3 years ago
Draw a lewis structure for c2cl2 and indicate how many and what types of bonds are present
vova2212 [387]

Answer:

B. 1 triple bond and 2 single bonds

Explanation:

C2Cl2  has linear structure.

For its Lewis structure, the C2Cl2 molecule has a total of 22 valence electrons. Each Carbon (C) atom has 4 valence electrons and 7 atoms in each chlorine atoms.

So, after pairing in C2Cl2, Chlorine (Cl) form 2 single bonds, one with each carbon atom andboth the Carbon (C) atoms form one triple bond with each other.

8 0
3 years ago
Dolomite is a carbonate of magnesium and calcium. Analysis shows that 7.81 g of dolomite contains 1.70 grams of Ca. Fluorite is
andrew11 [14]

Answer:

The richer source of calcium is fluorite.

Explanation:

Percentage of element in compound :

=\frac{\text{mass of element}}{\text{Mass of compound}}\times 100

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Given mass of dolomite = 7.81 g

Mass of calcium present in given mass of dolomite = 1.70 g

Percentage of calcium in Dolomite:

=\frac{1.70 g}{7.81 g}\times 100=21.77\%

2. Fluorite is a mineral of calcium and fluorine:

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Mass of fluorine present in given mass of fluorite = 1.34 g

Percentage of fluorine in fluorite :

=\frac{1.34 g}{2.76 g}\times 100=48.55\%

Percentage of calcium in fluorite = 100% - 48.55 % = 51.45%

Percentage of calcium in fluorite > Percentage of calcium in Dolomite

51.455 > 21.77%

So, the richer source of calcium is fluorite.

7 0
3 years ago
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