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Chemistry Grade 11 Unit 4: CHEMICAL KINETICS
national exam questions have come from this unit. It runs 14 pages; one careful study pass takes about 1.7 hours, and its difficulty is easier among Chemistry units. Each section below lists the questions set from it, with the year, and opens the page that teaches it.
4.3 Factors Affecting the Rate of a Chemical Reaction · read p. 209
- 2018 E.C., Q26 – Which of the following changes will generally increase the rate of a reaction?
- 2018 E.C., Q24 – Which of the following is NOT a pre-condition for a chemical reaction to occur?
- 2017 E.C., Q24 – Which one of the following statement CORRECTLY defines rate of reaction? The rate of a reaction is
- 2016 E.C., Q58 – Which of the following includes the preconditions required for a chemical reaction to occur?
- 2015 E.C., Q39 – Which one of the following COULD NOT be considered as factor influencing the rate of chemical reaction?
- 2015 E.C., Q72 – The rate law for: is rate= . The accepted mechanism for the reaction is Why DOES NOT H O appear in the rate 2 law? Beacuse
- 2014 E.C., Q24 – How does a catalyst increase the rate of a reaction?
- 2013 E.C., Q60 – Which statement is true about catalysts?
- 2013 E.C., Q63 – The mathematical expression log k=(-E a /2.303R)1/T + log A derived from the Arrhenius equation is of important as it shows
- 2012 E.C., Q19 – The reaction CHCl3(g) + Cl2(g) → CCl4(g) + HCl(g) has the rate law: Rate = k[CHCl3][Cl2]. If the concentration of CHCl3 is increased by a factor of five while the concentration of Cl2 is kept the same, the rate will be
- 2011 E.C., Q57 – The minimum energy required for an effective collision is called______.
- 2010 E.C., Q33 – Which of the following factors does NOT affect the rate of a chemical reaction?
- 2009 E.C., Q28 – The rate of a reaction increases with increasing the concentration of reactant molecules, because
- 2007 E.C., Q40 – The reaction $A + 3B = 2C + D$ is first order with respect to reactant A and second order with respect to reactant B. If the concentration of A is doubled and the concentration of B is halved, the rate of the reaction wo
- 2007 E.C., Q23 – Considering the reaction below, in which of the following will the effect of concentration and temperature simultaneously cause an increase in the rate at which products are formed? $\mathrm{CaCO_3\ (s) + 2HCl\ (aq) \ri
- 2006 E.C., Q28 – Which factors will influence the rate of the reaction shown below? I. The number of collisions per second II. The energy of the collisions III. The geometry with which the molecules collide
- 2006 E.C., Q62 – In a zero-order reaction for every rise of temperature, the rate is doubled. If the temperature is increased 10 C 0 100 C 0 from to , the rate of the reaction will become