F325

Question 0

Lattice enthalpy@

Answer 0

The enthalpy change that accompanies the formation of one mole of an ionic compound from its gaseous ions under standard condition. (Tick)

Question 1

Enthalpy change of neutralisation @

Answer 1

The energy change that accompanies the neutralisation of an acid by a base to form 1 mole of H2O under standard conditions.

Question 2

Strong acid @

Answer 2

Completely dissociate in solution @

Question 3

Weak acid @

Answer 3

Partially dissociate in solution

Question 4

Transition element @

Answer 4

A d-block element that forms an ion with incomplete d sub-shell. (tick)

Question 5

Bidentate ligands @

Answer 5

Donates 2 lone pair of electrons to the central metal ion to form two coordinate bonds. (tick)

Question 6

Ligands @

Answer 6

Donates a pair of electrons with the transition metal ion to form a coordinate bond. (tick)

Question 7

Complex ion @

Answer 7

A transition metal ion bonded to one or more ligands by coordinate bonds. (tick)

Question 9

Bronsted-lowry base @

Answer 9

Proton acceptor

Question 10

Bronsted-lowry acid @

Answer 10

Proton donor

Question 11

Lewis acid @

Answer 11

Lone pair acceptor

Question 12

Standard electrode potential @

Answer 12

The e.m.f of a half cell compared with a standard hydrogen half cell measured at 298K with conc of 1 moldm-3.(tick)

Question 13

Buffer solution @

Answer 13

A solution that minimises changes in pH after addition of small amount of acid or base. (tick)

Question 14

What is pH @

Answer 14

pH= -log[H+]

tick

Question 15

Initial rate of reaction @

Answer 15

Rate at start of reaction/ t=0

tick

Question 16

Half-life of reaction @

Answer 16

Time for concentration of a reactant to fall to half original value. Half life of a first order reaction is independent of the concentration.

Question 17

Rate of reaction @

Answer 17

The change in concentration of reactant or product per unit time. (tick)

Question 18

Rate-determining step @

Answer 18

The slowest step in the reaction mechanism of a multi-step reaction

Question 19

Enthalpy change of atomisation @

Answer 19

The enthalpy change that take place when one mole of gaseous atoms forms from the element under standard state. It is endothermic process because bonds have to be broken.

Question 20

Enthalpy change of solution @

Answer 20

The enthalpy change when one mole of a compound is completely dissolved in water under standard conditions.

Question 21

Standard enthalpy change of hydration @

Answer 21

The enthalpy change when one mole of gaseous ion is dissolved in water forming one mole of aqueous ions under standard conditions. Always exothermic because bonds are made between the ions and water molecules.

Question 22

Lewis base @

Answer 22

Lone pair donor

Question 23

Le chatelier’s principle @

Answer 23

The position of equilibrium will shift so as to minimise the effect of any change in conditions.

Question 24

Enthalpy change of formation @

Answer 24

The enthalpy change that take place when 1 mole of a compound is formed from its constituent elements in their standard states under standard conditions.