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-Dominant- [34]
3 years ago
14

The gases are contained in a reaction vessel and are in equilibrium at 298 K

Chemistry
1 answer:
Yuri [45]3 years ago
8 0

Answer:

1) Activation energy  ( A )

2) Molar concentration of X_{2}Z_{4}(g) ( C )

Explanation:

X_{2}Z_{4}(g) ⇄ 2XZ

1) <em>Activation energy </em><em>I</em>s decreased by the addition of a catalyst

while Equilibrium constant will Increase and other options will still remain unaffected

2)<em>Molar concentration of X</em>_{2}<em>Z</em>_{4}<em>(g) </em>Is deceased when the volume of the reaction vessel is increased and equilibrium is reestablished at 298 K

while Number of molecules present will Increase

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Which of the following elements would be the least likely to form a cation if involved in a chemical reaction?
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Cation means postive charged
answer is potassium.
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6 0
3 years ago
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What is the difference between a heterogeneous mixture and homogeneous mixture?
Fiesta28 [93]
A homogeneous mixture has the same uniform appearance and composition throughout


A heterogeneous mixture consists of visibly different substances or phases.
7 0
3 years ago
Using the equation PCl S(g) PCl 3(g) +Cl 2(g) , if PCl 3 is added, what way will the equilibrium shift?
DIA [1.3K]

Explanation:

Equation of reaction:

     PCl₅     ⇆     PCl₃   +  Cl₂

Problem: what direction will the reaction shift towards if PCl₃ is added;

Solution:

According to Le Chatelier's principle "if any conditions of a system in equilibrium is changed, the system will adjust itself in order to annul the effect of the change".

If the concentration of PCl₃ is increase, the equilibrium will shift towards the left because it is used up in that direction. More of the PCl₅ will be produced in order for the system to adjust back to equilibrium.

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Equilibrium brainly.com/question/11080417

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4 0
3 years ago
Consider the dissolution of 1.50 grams of salt XY in 75.0 mL of water within a calorimeter. The temperature of the water decreas
-BARSIC- [3]

Answer:

The quantity of heat lost by the surroundings is 258,5J

Explanation:

The dissolution of salt XY is endothermic because the water temperature decreased.

The total heat consumed by the dissolution process is:

4,184 J/g°C × (75,0 + 1,50 g) × 0,93°C = 297,7 J

This heat is consumed by the calorimeter and by the surroundings.

The heat consumed by the calorimeter is:

42,2 J/°C × (0,93°C) = 39,2 J

That means that the quantity of heat lost by the surroundings is:

297,7J - 39,2J = <em>258,5 J</em>

I hope it helps!

8 0
3 years ago
A 20.9 ml sample of 0.267 m koh solution required 29.1 ml of aqueous acetic acid solution in a titration experiment. calculate t
andrey2020 [161]
The molarity of the acetic acid solution is calculated as below

calculate the moles of KOH used
moles =molarity x volume
= 20.9 x0.267 = 5.58 moles

write the reaction equation

KOH + CH3COOH = CH3COOK + H2O

since  the reacting ratio between KOH to CH3COOH is 1:1 the  moles of CH3COOH is also = 5.58  moles

molarity of CH3COOH = moles/volume

=5.58 /29.1 =0.192 M

4 0
4 years ago
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