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Serga [27]
3 years ago
11

+ I_2(g) \longrightarrow 2HI(g)" alt="H_2(g) + I_2(g) \longrightarrow 2HI(g)" align="absmiddle" class="latex-formula">
The forward reaction above is exothermic. At equilibrium, what happens if the reaction mixture is cooled at constant volume?
Select all that apply.
1. The reaction absorbs energy.
2. The reaction releases energy.
3. [H₂] and [I₂] increase.
4. [H₂] and [I₂] decrease.
5. [H₂] and [I₂] remain constant.
6. [HI] increases.
7. [HI] decreases.
8. [HI] remains constant.

If C is added to the equilibrium system above, in which direction will the equilibrium shift?
Chemistry
1 answer:
Feliz [49]3 years ago
8 0

Answer:

The appropriate options are:

2. The reaction releases energy.

4. [H_{2}] and [I_{2}] increase.

6. [HI] increases.

The addition of a non-reacting component C will have no effect on the equilibrium system at constant volume.

Explanation:

H_{2}+I_{2}\longrightarrow2HI(exothermic)

The question can be answered by using Le Chatelier's principle.

According to Le Chatelier's Principle, for a exothermic reaction, decreasing the temperature at equilibrium will cause the forward reaction to occur.

If the forward reaction occurs, subsequently the concentrations of the reactants will decrease and that of the product will increase.

This is the reason for the options 4 and 6 being correct.

Exothermic reactions are the ones that release energy and endothermic reactions are the ones that absorb energy.

Since the forward reaction is exothermic, cooling the reaction mixture at constant volume, will lead to a release of energy.

This is the reason for the option 2 to be correct.

If a component C is added at constant volume, there will be no effect on the equilibrium system, assuming that the component C is non-reacting.

The concentration of that component C will increase, at constant volume.

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7 0
3 years ago
Tell me why in Louisiana it always gotta freaking have a hurricane
Gala2k [10]
Why do so many storms target the state? The easterly winds typically blowing across Jacksonville in the summer flow out of the Azores/Bermuda high-pressure system which also steers many hurricanes into the Gulf. In June and October, storms are more likely to move up the Gulf from the south and southwest.
7 0
3 years ago
What is the boiling point of a solution containing 203 g of ethylene glycol (C2H6O2) and 1035 g of water? (Kb for water is 0.52
Andru [333]

Answer:

101,37°C

Explanation:

Boiling point elevation is one of the colligative properties of matter. The formula is:

ΔT = kb×m <em>(1)</em>

Where:

ΔT is change in boiling point: (X-100°C) -X is the boiling point of the solution-

kb is ebulloscopic constant (0,52°C/m)

And m is molality of solution (mol of ethylene glycol / kg of solution). Moles of ethylene glycol (MW: 62,07g/mol):

203g × (1mol /62,07g) = <em>3,27moles of ethlyene glycol</em>

<em />

Molality is: 3,27moles of ethlyene glycol / (1,035kg + 0,203kg) = 2,64m

Replacing these values in (1):

X - 100°C = 0,52°C/m×2,64m

X - 100°C = 1,37°C

<em>X = 101,37°C</em>

<em></em>

I hope it helps!

7 0
3 years ago
Please help<br>Please help
deff fn [24]
A)3 bcuz paper filters are used to separate solids from liquids

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3 0
3 years ago
A sample of gas has a pressure of 742 torr. What is the pressure in atmospheres?
ycow [4]

Answer:742 torr= approximately 0.976 atm

Explanation:

Since we know that one atm= 760 torr, we can compute the following calculation:

(742 torr/1)*(1atm/760torr)=0.976316 atm

Remember sig figs (3) to round it to 0.976 atm

\frac{742 torr}{1}*\frac{1 atm}{760 torr}=0.976316=0.976 atm

(torr cancels out and we're left with atm)

Hope this helps :)

8 0
3 years ago
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