# Questions tagged [equilibrium]

The state in which both reactants and products are present at concentrations which have no further tendency to change with time.

1,233 questions
Filter by
Sorted by
Tagged with
888 views

### Equilibrium reaction ICE method to ideal gas law

The below equilibrium reaction takes place among the burnt exhaust gases still left inside the engine cylinder and being reused again for combustion. The author has specified the equilibrium between ...
151 views

### How does pressure shift equlibrium

Here is a question from my practice problems: I know that the answer is A, but I don't know why. Is it because A has the most moles of gas on the left? thanks
136 views

### chemical equilibrium reaction for burned gases in engine

I do not understand how equation(3) occurs.(taken from the book Internal Combustion Engines by John B.Heywood)  Consider a reactive mixture of ideal gases. The reactant species $M_a,M_b$ etc.and ...
39k views

7k views

### How can the equilibrium shift, while Kc remains constant?

Consider the following reversible reaction. $$\ce{Cr2O7^2-(aq) + H2O(l) <=> 2 CrO4^2-(aq) + 2 H+(aq)}$$ What will happen to the position of equilibrium and the value of $K_c$ when more ...
771 views

### The reasoning behind predominance diagrams

Consider a one dimensional predominance diagram for a simple acid-base reaction: $$\ce{AH <=> A^- + H^+}$$ With equilibrium constant: $$K_a = \frac{[A^-]_{eq}[H^+]_{eq}}{[AH]_{eq}}$$ If I ...
20k views

3k views

### Why is water ignored in the ionic equilibrium of HF?

While trying to understand the solution of a problem given in my textbook, I realized I'm having some difficulty with the solution. The problem is as follows: The ionization constant of $\ce{HF}$ ...
16k views

### Reaction between silver nitrate and aluminum chloride

I googled a bit about what $\ce{AgNO3 + AlCl3}$ will yield and found out the following: $\ce{3AgNO3 + AlCl3 -> Al(NO3)3 + 3AgCl}$ Why is that? I know that $\ce{Ag}$ is higher up in the reactivity ...
262 views

### Why is it that the bigger the side-chain is, its hydrogen atoms tend to be more equatorial?

The most stable cyclohexane form is the chair conformation but on the other hand, the bigger the side-chain of the cyclohexane is, its hydrogen atoms become more equatorial rather than axial, which ...
A reaction proceeds towards the direction of lesser Gibbs free energy (at constant $T$ (temperature) and $P$ (pressure)). So, we could say that Gibbs free energy at equilibrium is minimum. On the ...