Which will cause the value of the equilibrium constant to change? (2 points)
2 answers:
Answer:
changing the temperature
Explanation:
In general, a reaction is said to be at equilibrium when the rate of consumption of the reactants equals the rate of formation of products. The dynamics of this state can be represented in terms of the 'equilibrium constant', Keq which is the ratio of the concentration of products to that of the reactants.
Consider a hypothetical reaction:
A ↔ B
Based on the above equation, the value of Keq should increase if the concentration of B i.e. the product is decreased. However, if concentration of B is decreased then based on Le Chatelier's principle, the equilibrium will shift in a direction to produce more of B such that a new equilibrium is established and Keq remains undisturbed. This is also the case for changes in pressure.
It is only by changing the temperature does the value of Keq change.
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Answer:- 3.12 g carbon tetrachloride are needed.
Solution:- The balanced equation is:
From given actual yield and percent yield we will calculate the theoretical yield that would be further used to calculate the grams of carbon tetrachloride.
percent yield formula is:
percent yield =
theoretical = 3.44 g
From balanced equation, there is 2:1 mol ratio between dichloethane and carbon tetrachloride.
Molar mass of dichloroethane is 84.93 gram per mol and molar mass of carbon tetrachloride is 153.82 gram per mol.
=
So, 3.12 grams of carbon tetrachloride are needed to be reacted.