Lattice energy multiple choice questions – A-Level Chemistry (Edexcel International)

Lattice Energy

Total marks:0 / 21

1 of 21

Which of these compounds has the greatest covalent character?

0 / 1

2 of 21

Magnesium chloride, MgCl₂, has two lattice energy values quoted in the data booklet.

The first is the experimental value, obtained from the Born-Haber cycle, -2,526 kJ mol^-1; the second is the theoretical value, -2,326 kJ mol^-1.

Why are the two values different?

0 / 1

3 of 21

Which ionic compound has the largest value of lattice enthalpy?

0 / 1

4 of 21

Which equation represents the lattice enthalpy of magnesium sulfide?

0 / 1

5 of 21

Which of the following compounds has the most polarised anion?

0 / 1

6 of 21

Mg²⁺ has a higher charge density than Ca²⁺.

Which statement is correct?

0 / 1

7 of 21

The bond enthalpy for the Cl-Cl bond is +243.0 kJ mol^-1.

What is the enthalpy change of atomisation of chlorine in kJ mol^-1?

0 / 1

8 of 21

The energy cycle for the dissolving of magnesium chloride in water is

Energy cycle diagram for the dissolving of magnesium chloride in water showing enthalpy changes.

The enthalpy of hydration of the magnesium ion is -1,920 kJ mol^-1.

What is the enthalpy of hydration, in kJ mol^-1, of the chloride ion?

0 / 1

9 of 21

Energy is given out when one mole of gaseous magnesium ions is hydrated.

Mg²⁺_(g) + aq ➔ Mg²⁺_(aq)

This is more exothermic than the corresponding value for barium ions, Ba²⁺, because the

0 / 1

10 of 21

Which change would have a negative ΔH value?

0 / 1

11 of 21

Which pair of enthalpy changes will alwaysshare the same sign (i.e. both are always exothermic orboth are always endothermic)?

0 / 1

12 of 21

Which of the following quantities, used in the calculation of the lattice enthalpy of lithium oxide, Li₂O, has a negative value?

0 / 1

13 of 21

Which of the equations below represents the first electron affinity for oxygen?

0 / 1

14 of 21

The ionic radii in nm of some ions are given below.

Table showing ionic radii in nanometres of some ions including Li+, Ca2+, F-, Cl-, O2-, and S2-.

Which of the following compounds has the most exothermic lattice energy? They all have the same crystal structure.

0 / 1

15 of 21

The lattice enthalpy of calcium chloride can be calculated using three of the enthalpy changes below.

Which enthalpy change is notrequired?

0 / 1

16 of 21

Which equation represents the process that occurs when the standard enthalpy of atomisation of iodine is measured?

0 / 1

17 of 21

Which equation represents the average bond enthalpy of the Si-H bond in SiH₄?

0 / 1

18 of 21

Which change is exothermic?

0 / 1

19 of 21

Enthalpy data for some reactions are shown in the table below.

Equation	ΔH
C_2_H_4(g)_ + 3O_2(g)_ ➔ 2CO_2(g)_ + 2H_2_O_(l)_	x
C_2_H_6(g)_ + $\frac{7}{2}$ O_2(g)_ ➔ 2CO_2(g)_ + 3H_2_O_(l)_	y
H_2(g)_ + $\frac{1}{2}$ O_2(g)_ ➔ H_2_O_(l)_	z

What is the enthalpy change of reaction for the following equation?

C₂H_4(g) + H_2(g) ➔ C₂H_6(g)

0 / 1

20 of 21

The Born-Haber cycle for potassium oxide is shown below:

Which expression represents the lattice enthalpy in kJ mol^-1?

0 / 1

21 of 21

Which expression gives the enthalpy change, ∆H, for the thermal decomposition of calcium carbonate?

0 / 1

Equation

ΔH

C_2_H_4(g)_ + 3O_2(g)_ ➔ 2CO_2(g)_ + 2H_2_O_(l)_

C_2_H_6(g)_ +

\frac{7}{2}

O_2(g)_ ➔ 2CO_2(g)_ + 3H_2_O_(l)_

H_2(g)_ +

\frac{1}{2}

O_2(g)_ ➔ H_2_O_(l)_

Lattice Energy - exam practice

Lattice Energy

Question 1 of 21

Question 2 of 21

Question 3 of 21

Question 4 of 21

Question 5 of 21

Question 6 of 21

Question 7 of 21

Question 8 of 21

Question 9 of 21

Question 10 of 21

Question 11 of 21

Question 12 of 21

Question 13 of 21

Question 14 of 21

Question 15 of 21

Question 16 of 21

Question 17 of 21

Question 18 of 21

Question 19 of 21

Question 20 of 21

Question 21 of 21

Lattice Energy - exam practice

Lattice Energy

Question 1 of 21

Question 2 of 21

Question 3 of 21

Question 4 of 21

Question 5 of 21

Question 6 of 21

Question 7 of 21

Question 8 of 21

Question 9 of 21

Question 10 of 21

Question 11 of 21

Question 12 of 21

Question 13 of 21

Question 14 of 21

Question 15 of 21

Question 16 of 21

Question 17 of 21

Question 18 of 21

Question 19 of 21

Question 20 of 21

Question 21 of 21