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Ch.15 - Chemical Equilibrium
15์žฅ, ๋ฌธ์ œ 26a

Consider the following equilibrium, for which at ๐พ๐‘ = 0.0752 at 480ยฐC: 2 Cl2(๐‘”) + 2 H2O(๐‘”) โ‡Œ 4 HCl(๐‘”) + O2(๐‘”) (a) What is the value of ๐พ๐‘ for the reaction 4 HCl(๐‘”) + O2(๐‘”) โ‡Œ 2 Cl2(๐‘”) + 2 H2O(๐‘”)?

๊ฒ€์ฆ๋œ ๋‹จ๊ณ„๋ณ„ ์•ˆ๋‚ด
1
Identify that the given reaction is the reverse of the original reaction.
Recall that the equilibrium constant for a reverse reaction is the reciprocal of the equilibrium constant for the forward reaction.
Write the expression for the equilibrium constant of the reverse reaction as 1/K_p.
Substitute the given K_p value of 0.0752 into the expression for the reverse reaction.
Calculate the reciprocal to find the K_p for the reverse reaction.

๋น„์Šทํ•œ ๋ฌธ์ œ์— ๋Œ€ํ•œ ๊ฒ€์ฆ๋œ ์˜์ƒ ๋‹ต๋ณ€:

์ด ์˜์ƒ ํ•ด๋ฒ•์€ ์œ„ ๋ฌธ์ œ์— ๋„์›€์ด ๋œ๋‹ค๊ณ  ํŠœํ„ฐ๋“ค์ด ์ถ”์ฒœํ•œ ๊ฒƒ์ž…๋‹ˆ๋‹ค.
์˜์ƒ ๊ธธ์ด:
1m

์ฃผ์š” ๊ฐœ๋…

์งˆ๋ฌธ์— ์˜ฌ๋ฐ”๋ฅด๊ฒŒ ๋‹ตํ•˜๊ธฐ ์œ„ํ•ด ๋ฐ˜๋“œ์‹œ ์ดํ•ดํ•ด์•ผ ํ•˜๋Š” ํ•ต์‹ฌ ๊ฐœ๋…๋“ค์€ ๋‹ค์Œ๊ณผ ๊ฐ™์Šต๋‹ˆ๋‹ค.

Equilibrium Constant (Kp)

The equilibrium constant, Kp, is a numerical value that expresses the ratio of the concentrations of products to reactants at equilibrium for a given reaction at a specific temperature. It is calculated using the partial pressures of gases involved in the reaction. A Kp value less than 1 indicates that at equilibrium, reactants are favored, while a value greater than 1 indicates that products are favored.
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๊ฐ€์ด๋“œ ์ฝ”์Šค
03:20
Equilibrium Constant Expressions

Reversibility of Reactions

Chemical reactions can proceed in both forward and reverse directions, and the equilibrium constant for the reverse reaction is the reciprocal of the forward reaction's equilibrium constant. This means that if you know Kp for a reaction, you can easily find Kp for the reverse reaction by taking the inverse of that value. This principle is crucial for solving equilibrium problems.
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Stoichiometry in Equilibrium

Stoichiometry refers to the quantitative relationship between reactants and products in a chemical reaction, as represented by the balanced equation. In equilibrium expressions, the coefficients of the balanced equation become the exponents in the Kp expression. Understanding stoichiometry is essential for accurately calculating equilibrium constants and predicting the direction of the reaction.
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