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galina1969 [7]
2 years ago
6

A generic gas, x, is placed in a sealed glass jar and decomposes to form gaseous y and solid z. 2x(g)↽−−⇀y(g)+z(s) how are these

equilibrium quantities affected by the initial amount of x(g) placed in the container? assume constant temperature.
Chemistry
2 answers:
marissa [1.9K]2 years ago
8 0

Formation of Y and Z directly depends on initial amount of X present.

Further Explanation:

Le Chatelier’s principle:

This states that any change in pressure, temperature or concentration in any reaction that is present in equilibrium tends to shift equilibrium in such direction that reverses the effect of changed quantity in reaction.

Given reaction occurs as follows:

2\text{X(g)}\rightleftharpoons\text{Y(g)}+\text{Z(g)}

According to this reaction, two moles of X decompose to form one mole of Y and one mole of Z.

Amounts of Y and Z formed during the given reaction depend on initial amount of X present. More the amount of X, higher will be formation of products Y and Z and vice-versa. So if amount of X is increased, equilibrium will tend to shift in direction that reverses this effect. This is done only by increased consumption of X that results in more formation of products. Therefore more amounts of Y and Z are formed if initial amount of X is increased and formation of Y and Z decreases if initial amount of X is decreased.

Learn more:

  • Calculation of equilibrium constant of pure water at 25°c: brainly.com/question/3467841
  • Complete equation for the dissociation of  (aq): brainly.com/question/5425813

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Chemical Equilibrium

Keywords: Le Chatelier’s principle, equilibrium, shift, direction, X, Y, Z, 2X, pressure, temperature, concentration, consumption, increase, decrease, two moles, one mole.

Aleksandr [31]2 years ago
3 0
Answer: the equilibrium will be displaced to the right leading an increase on the quantities of y(g) and z(s).

Justification:

According to the rules of equilibrium, based on Le Chatellier's priciple, any change in a system in equilibrium will be tried to be compensated to restablish the equilibrium

The higher the amount, and so the concentration, of X(g), the more will the forward reaction proceed leading to an increase on the concentration of the products y(g) and z (s). Look that that will also be accompanied by a decreasing on the pressure, since 2 molecules of the gas X(g) are converted into 1 molecule of the gas y(g).
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A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25-g sample of the gas occupies a volume of 1.00 L and exerts a pressure of 1.26 atm at -4.0°C. Which of the following is its molecular formula?  

1) NO2  

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2 years ago
The elements chlorine and iodine have similar chemical properties because they _____. Group of answer choices have the same numb
worty [1.4K]

Answer:

Have the same number of electrons in their outer energy levels

Explanation:

Elements in the same group have similar chemical properties because they have the same number of valence electron(s) in their outermost shell.

Chlorine and Iodine have similar chemical properties because they have the same number of valence electron in their outermost shell. This can be seen from their electronic configuration as shown below:

Cl (17) => 1s² 2s²2p⁶ 3s²3p⁵

I (53) => [Kr] 4d¹⁰ 5s²5p⁵

From the above illustration:

Outer shell of Cl (3s²3p⁵) = 2 + 5 = 7 electrons

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Since they have the same number of valence electrons, therefore, they will have similar chemical properties.

7 0
1 year ago
1. Suppose 0.7542 g of magnesium reacts with excess oxygen to form magnesium oxide as the only product, what would be the theore
Alina [70]

Answer :

(1) The theoretical yield of product, MgO is, 1.257 grams.

(2) The percent yield of MgO is, 64.13 %

(3) If the percent yield is calculated to be over 100% then there might be some impurity present in the desired product.

Solution : Given,

Mass of Mg = 0.7542 g

Molar mass of Mg = 24 g/mole

Molar mass of MgO = 40 g/mole

First we have to calculate the moles of Mg.

\text{ Moles of }Mg=\frac{\text{ Mass of }Mg}{\text{ Molar mass of }Mg}=\frac{0.7542g}{24g/mole}=0.03142moles

Now we have to calculate the moles of MgO

The balanced chemical reaction is,

2Mg(s)+O_2(g)\rightarrow 2MgO(s)

From the reaction, we conclude that

As, 2 mole of Mg react to give 2 mole of MgO

So, 0.03142 moles of Mg react to give 0.03142 moles of MgO

Now we have to calculate the mass of MgO

\text{ Mass of }MgO=\text{ Moles of }MgO\times \text{ Molar mass of }MgO

\text{ Mass of }MgO=(0.03142moles)\times (40g/mole)=1.257g

Theoretical yield of MgO = 1.257 g

Experimental yield of MgO = 0.8922 g

Now we have to calculate the percent yield of MgO

\% \text{ yield of }MgO=\frac{\text{ Experimental yield of }MgO}{\text{ Theretical yield of }MgO}\times 100

\% \text{ yield of }MgO=\frac{0.8922g}{1.257g}\times 100=70.97\%

Therefore, the percent yield of MgO is, 70.97 %

If the percent yield is calculated to be over 100% then the product would be greater than 1.257 g which indicates that there might be some impurity present in the desired product.

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2 years ago
Determine the percent composition by mass of a 100g salt solution which contains 20g salt
prisoha [69]

Answer:

Mass of solution=100g

mass of salt=20g

so; mass of solute=80g

percentage composition =(mass of salt/total

mass) ×100

=  \frac{20}{100}  \times 100 \\  = 20\%

glad to help you

hope it helps

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