OCR Module 3

Welcome to your OCR Module 3

Which of the following correctly puts the elements in order of increasing first ionisation energy?
Which of the following is not true about ionisation energies of an element?
Which of the following statements about the third period is not true as we move from left to right?
Which of the following is incorrect about magnesium?
Which of the following lists elements in order of increasing reactivity?
Which of the following reacts with potassium bromide to give a yellow solution?
What is the reaction called in which chlorine reacts with sodium hydroxide to form sodium chlorate (I)?
Which halide ion gives a pale yellow precipitate with silver nitrate?
Calorimetry is usually used to find out:
The enthalpy change for a reaction is independent of the route by which the chemical change takes place. This statement is the definition of what?
Enthalpy changes of combustion of carbon monoxide, hydrogen and methanol are given as -283kJ/mol and -286 kJ/mol and -671kJ/mol respectively. What is the heat of reaction of the formation of methanol from carbon monoxide and hydrogen?
What is the effect of a catalyst on activation energy?
What change causes a Maxwell-Boltzmann distribution curve to shift to the right?
The formation of ammonia from nitrogen and hydrogen is exothermic. Under equilibrium, what change would increase the yield of ammonia the most?
What is the unit of the equilibrium constant for the equilibrium of a reaction between chlorine and hydrogen gas to form hydrogen chloride gas?
Which of the following is true about catalysts?
I. They lower the activation energy
II. They increase product yield in equilibrium reactions
III. They increase the equilibrium constant