The equilibrium, solid ⇌ liquid ⇌ gas will shift in the forward direction when
Correct answer: A. Temperature is raised
- A. Temperature is raised
- B. Temperature is constant
- C. Temperature is lowered
- D. Pressure is increased
Explanation
The equilibrium involving solid, liquid, and gas phases described here is an endothermic process. Raising the temperature provides the energy needed for the solid to transition into liquid and subsequently into gas, shifting the equilibrium to the right. This supports the forward direction of the reaction. In contrast, keeping the temperature constant or lowering it does not provide the energy required for the endothermic process, hence the equilibrium remains unchanged or shifts left. Pressure changes have no significant effect on this solid-liquid-gas equilibrium, as they primarily impact equilibria involving gases with differing moles.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
Practise Chemical Equilibrium
625 free Chemical Equilibrium MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Chemical Equilibrium questions
What will be the effect of addition of catalyst at room temperature?
The equilibrium constant for the reaction H2 + I2 ⇌ 2HI is 50. If the volume of the container is reduced to half of its original value, the value of the equilibrium constant will be
For the chemical equilibrium A+2B⇌2C, the value of the equilibrium constant, K, is 10. What is the value for the equilibrium constant for the reaction written in reverse? 2C⇌A+2B
A small value of Keq indicates that equilibrium occur
The equilibrium constant, Kc, for the reaction to form ethyl ethanoate from ethanol and ethanoic acid, C2H5OH + CH3CO2H ⇋ CH3CO2C2H5 + H2O, at 60oC is 4.00. When 1.00 mol each of ethanol and ethanoic acid are allowed to reach equilibrium at 60oC, what is the number of moles of ethyl ethanoate formed?
Each sentence below has a blank indicating that something has been omitted. Choose the word that best fits in with the meaning of the sentence as a whole.The novelist told the publisher that the royalty reimbursement indicated in the agreement was _ on the grounds that the research expenditures, including traveling for writing the book, were far more than the royalties projected for a year.