Equilibrium (GCSE Chemistry)

A sealed container holds a mixture at equilibrium for 2 NO2 ? N2O4. The piston is pushed in so pressure rises. Which immediate effect is expected when equilibrium is re-established?

When teaching Le Chatelier’s principle, which correct summary should students learn?

In the equilibrium 2 SO2(g) + O2(g) ? 2 SO3(g) the forward reaction is exothermic. What effect does increasing the pressure have on the equilibrium yield of SO3?

Which technique would a chemist use to demonstrate the effect of concentration on the position of equilibrium in a laboratory?

In the context of rates, what is the main reason increasing concentration increases reaction rate?

Which change would NOT affect the position of a chemical equilibrium for gases?

When ammonium nitrate dissolves in water the temperature of the solution falls. Which statement best describes this process?

In a rate experiment, a student measures how long it takes to collect a fixed volume of gas. If the time measured increases, what does this indicate about the rate?

Increasing the temperature for an exothermic equilibrium reaction (heat given out in forward direction) will:

An equilibrium mixture contains both blue and yellow copper complexes producing a green solution. To make the solution more yellow, the student should:

Which experimental change increases the rate of reaction by increasing the frequency of successful collisions?