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Slav-nsk [51]
4 years ago
13

For each of the following systems at equilibrium, predict whether the reaction will shift to the right, left, or not be affected

by a decrease in the reaction container volume.
A) PCl3(g) + Cl2(g) ⇌ PCl5(g) 1. no shift
2. right shift
3. left shift B) 2 NO(g) ⇌ N2(g) + O2(g)
1. no shift 2. right shift3. left shift C) 2 NO2(g) ⇌ N2O4(g)
1. no shift 2. right shift3. left shift
Chemistry
1 answer:
bulgar [2K]4 years ago
3 0

Answer:

A - right shift

B - no shift

C - right shift

Explanation:

<em>According to Le Chatelier's principle, when a reaction is in equilibrium and one of the factors affecting the rate of reaction is introduced, the equilibrium will shift so as to annul the effects of the constraint. </em>

In this case, decreasing the volume of the reaction's container is equivalent to increasing the pressure of the reaction. When pressure is increased, the reaction will shift towards the side with a lower number of moles.

In A, the total number of moles on the left-hand side of the reaction is two while it is one on the right-hand side. <em>An increase in pressure will, therefore, see the equilibrium shifting to the right-hand side.</em>

In B, the total number of moles on both the right and the left-hand side is two each. <em>An increase in the pressure will have no effect on the equilibrium.</em>

In C, the total number of moles on the left-hand side is two while it is one on the right-hand side. <em>Hence, an increase in the pressure of the reaction will cause a shift in the equilibrium to the right. </em>

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Answer : Option B) All atoms of a single substance are identical.


Explanation : The scientist John Dalton proposed the atomic theory which had the postulates as follows.


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8 0
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5 0
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A chemist prepares a solution of potassium iodide (KI) by measuring out 88. umol of potassium iodide into a 200. mL volumetric f
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The concentration in mol/L of the chemist's potassium iodide solution : = 4.4 x 10⁻⁴ M

<h3>Further explanation</h3>

Given

88. μmol of Potassium iodide

200. mL volumetric flask

Required

The concentration

Solution

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}

Conversion :

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The molarity :

= n : V

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