RATEST OF REACTION - GCSE Chemistry (AQA Topic C6)

Recent questions

• What is rate of reaction?

  Rate of reaction is the speed at which a reaction occurs, calculated as the change in quantity over time. It can be measured through experiments like reacting hydrochloric acid and sodium thiosulfate or measuring gas volume produced using a gas syringe.

• What factors affect reaction rate?

  Factors affecting reaction rate include increasing concentration of reactants in solution, pressure of gas reactants, surface area of solid reactants, and temperature. Catalysts can also increase reaction rates by lowering activation energy.

• What are reversible reactions?

  Reversible reactions, like the Haber process forming ammonia, can shift equilibrium based on changes in pressure, concentration, or temperature. Le Chatelier's principle explains how systems adjust to counteract changes in equilibrium conditions.

• How do catalysts affect reaction rates?

  Catalysts can increase reaction rates by lowering activation energy, making it easier for the reaction to occur. They do not get consumed in the reaction and can be reused multiple times.

• What is Le Chatelier's principle?

  Le Chatelier's principle explains how systems adjust to counteract changes in equilibrium conditions. If a system at equilibrium is disturbed by changes in pressure, concentration, or temperature, it will shift to minimize the effect of the disturbance and restore equilibrium.