NECO Chemistry · Solutions, energy and chemical change
Chemical kinetics and equilibrium system: NECO Chemistry Past Questions and Answers
What the WAEC syllabus covers in Chemical kinetics and equilibrium system
Our summary: What makes reactions go faster or slower, collision theory and activation energy, and how reversible reactions reach equilibrium.
- Rate of reactions ((1) Definition of reaction rate. (2) Observable physical and chemical changes: colour, mass, temperature, pH, formation of precipitate etc.)
- Rate of reactions: factors affecting rates ((1) Physical states, concentration/pressure of reactants, temperature, catalysts, light, particle size and nature of reactants. (2) Appropriate experimental demonstration for each factor is required.)
- Rate of reactions: theories of reaction rates ((1) Collision and transition state theories to be treated qualitatively only. (2) Factors influencing collisions: temperature and concentration. (3) Effective collision. (4) Activation energy. (5) Energy profile showing activation energy and enthalpy change.)
- Rate of reactions: analysis and interpretation of graphs (Drawing of graphs and charts.)
- Equilibrium: general principle (Explanation of reversible and irreversible reactions. Reversible reaction i.e. dynamic equilibrium. Equilibrium constant K must be treated qualitatively. It must be stressed that K for a system is constant at constant temperature. Simple experiment to demonstrate reversible reactions.)
- Equilibrium: Le Chatelier's principle (Prediction of the effects of external influence of concentration, temperature, pressure and volume changes on equilibrium systems.)
Syllabus content © The West African Examinations Council (WASSCE (harmonised West African syllabus)). NECO questions are matched to the WAEC syllabus topic.
NECO Chemistry questions on Chemical kinetics and equilibrium system
- NECO 2009The relationship between equilibrium constant and free energy change is represented as
- NECO 2009Which of the following compounds will undergo thermal dissociation?
- NECO 2008Which of the following will Increase the rate of reaction of Chips of a metal M as shown in the equation below? M(s)+2HC1(aq) → MCI2 (aq) + H2(g)
- NECO 2008In which of the following equations can Le-chartelier’s principle be applied?
- NECO 2008The rate of a chemical reaction is NOT affected by one of these factors
- NECO 2008A chemical system is at equilibrium when
- NECO 2003What change will occur to the equilibrium mixture 2CrO^ 2- 4(aq) + 2H^+(aq) ⇔ Cr 2O^ 2- 7(aq) + H 2O(l) when excess sodium hydrogen solution is added?
- NECO 2001Which method is NOT used to determine rate of a reaction?
- NECO 2001Which of the following is TRUE of a catalyst? I. it alters the activation energy of a reaction II. it is effective in a reaction but cannot initiate a reaction…
Years with Chemical kinetics and equilibrium system questions in DeeepSolve's question bank
From the past questions DeeepSolve holds, not a count of everything the exam body has set.
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