AQA Physical Chemistry 1

Welcome to your AQA Physical Chemistry 1

Which of the following is not true about electron impact ionisation?
Which of the following is not true about ionisation energies of an element?
What is the correct order of energies of subshells?
What is the concentration of the solution when 16g of sodium chloride is dissolved in 250 cubic centimetres of water?
Calculate the mass of nitrogen gas that has a pressure of 100 kPa, temperature of 25 degrees centigrade, and a volume of 500 cubic centimetres? (R = 8.31)
How many atoms of magnesium are present in an 18g sample of magnesium metal?

The bond angle in chlorine trifluoride (ClF3) is approximately equal to?

Which of the following statements is correct?
I. Polar molecules are symmetrical
II. Non-polar molecules can contain polar bonds
III. Van der Waals forces occur due to temporary dipoles

What type of bonding exists in ammonium chloride (NH4Cl)?

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 the reaction in the formation of methanol from carbon monoxide and hydrogen?
Which of the following statement is true about a C-H bond?
I. The bond energy of C-H is not same for all C-H bonds
II. The bond-breaking energy is positive
III. A C-H bond is polar
Calorimetry is usually used to find out:
The area under a Maxwell-Boltzmann distribution represents:
What change causes the Maxwell-Boltzmann distribution curve to shift to the right?
What is the effect of a catalyst on activation energy?
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
The oxidation number of carbon in carbonate ion is?
Bromine water displaces iodine from potassium iodide. Which of the following is incorrect?