JAMB Chemistry · Solutions, the environment and chemical change
Rates of chemical reaction: JAMB Chemistry Past Questions and Answers
What the JAMB syllabus covers in Rates of chemical reaction
Our summary: The factors that speed up or slow down reactions, reaction rate curves, and activation energy.
- Elementary treatment of the following factors which can change the rate of a chemical reaction
- Temperature (e.g. the reaction between HCl and Na₂S₂O₃ or Mg and HCl.)
- Concentration/pressure (e.g. the reaction between HCl and Na₂S₂O₃, HCl and marble and the iodine clock reaction. For gaseous systems, pressure may be used as concentration term.)
- Surface area (e.g. the reaction between marble and HCl with marble in: (i) powdered form; and (ii) lumps of the same mass.)
- Catalyst (e.g. the decomposition of H₂O₂ or KClO₃ in the presence or absence of MnO₂.)
- Reaction rate curves
- Activation energy (Qualitative treatment of Arrhenius' law and the collision theory, effect of light on some reactions e.g. halogenation of alkanes.)
Objectives
- identify the factors that affect the rates of a chemical reaction;
- determine the effects of temperature on the rate of reactions;
- examine the effect of concentration/pressure on the rate of a chemical reaction;
- describe how the rate of a chemical reaction is affected by surface area;
- determine the types of catalysts suitable for different reactions and their effects;
- determine ways of moderating these effects in chemical reactions;
- interpret reaction rate curves;
- solve simple problems on the rate of reactions;
- relate the rate of reaction to the kinetic theory of matter;
- examine the significance of activation energy to chemical reactions; and
- deduce the value of activation energy (Ea) from reaction rate curves.
Syllabus content © The Joint Admissions and Matriculation Board (UTME).
JAMB Chemistry questions on Rates of chemical reaction
- JAMB 2025If 5g of Iron filling was reacted with excess dilute H 2 SO 4 to evolve hydrogen gas, which came to completion after 10 min, calculate the rate of reaction in…
- JAMB 2024Determine the half-life of a first order reaction with constant 4.5 x 10 ^ -3 sec ^ -1 .
- JAMB 2024In a chemical reaction, surface area of reactants can affect
- JAMB 2024A factor that does not affect the rate of a chemical reaction is
- JAMB 2023Which of the following factors does NOT affect the rate of a chemical reaction?
- JAMB 2022SO 2 + O 2 → 2SO 3 In the reaction above, the most suitable catalyst is?
- JAMB 2019Which of the following statements about catalyst is false?
- JAMB 2019Which of the following factors will speed up the rate of evolution of carbon (iv) oxide in the reaction below? 2HCl + CaCO 3 → CaCl 2 + H 2 O + CO 2
- JAMB 20182KClO 3 (s) → 2KCl(s) + 3O 2 (g) The importance of the catalyst in the reaction above is that
- JAMB 2018The collision theory explains reaction rates in terms of
- JAMB 2018In the preparation of oxygen by heating KCIO 3 , in the presence of MnO 2 only moderate heat is needed because the catalyst acts by 2
- JAMB 2016CH4(g) + CI2(g) CH2CI(s) + HCIg The major factor that influences the rate of the reaction above is
- JAMB 2014CH3COOC2H5(1) + H2O(1) ⇌ CH 3COOH (aq) + C 2H 5OH (aq) The purpose of H+ in the reaction above is to
- JAMB 2014In a chemical reaction, the change in concentration of a reactant with time is
- JAMB 2013the minimum amount of energy required for a reaction to take place is
- JAMB 2012The highest rate of production of carbon (lV) oxide can be achieved using
- JAMB 2012Mineral acids are usually added to commercial hydrogen peroxide to
- JAMB 2011CH4(g) + Cl2(g) → CH3 Cl(s) + HCl(g) The major factor that influence the rate of the reaction above is
- JAMB 2010In the preparation of oxygen by heating KClO3 in the presence of MnO2, only moderate heat is needed because the catalyst acts by?
Years with Rates of chemical reaction questions in DeeepSolve's question bank
From the past questions DeeepSolve holds, not a count of everything the exam body has set.
- 2025
- 2024
- 2023
- 2022
- 2019
- 2018
- 2016
- 2014
- 2013
- 2012
- 2011
- 2010