Equilibrium (GCSE Chemistry)

A reversible reaction releases 120 kJ when 2 moles of product form. If 1 mole reacts in the reverse direction, how much energy change occurs?

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

In a reversible reaction at equilibrium, adding more reactant will initially do what?

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

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?

A reaction profile shows that adding a catalyst reduces the height of the activation-energy peak. What is a direct consequence of this on the reacting molecules?

In the Haber process, unreacted N2 and H2 are often recycled back into the reactor via a condenser and pipe. Why is the condenser connected back to the reactor?

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

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

In the industrial formation of SO3 from SO2 + 1/2 O2 ? SO3, why is a compromise temperature (not extremely low) chosen?

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?