AQA A LEVEL Chemistry
EXAM QUESTIONS AND
VERIFIED CORRECT
ANSWERS GRADED A+
LATEST 100% GUARANTEED
PASS
Le Chatelier's principle - CORRECT ANSWER-When a system in dynamic equilibrium is subjected
to change, the position of equilibrium will shift to oppose the change.
oxidising agents - CORRECT ANSWER-electron acceptors
reducing agents - CORRECT ANSWER-electron donors
Enthalpy of formation - CORRECT ANSWER-Enthalpy change when one mole of a compound is
formed from its constituent elements under standard conditions in their standard states
Enthalpy of atomization - CORRECT ANSWER-The energy required to produce one mole of
gaseous atoms from an element in its standard state
Electron affinity - CORRECT ANSWER-the enthaply change when one mole of gaseous atoms
forms one mole of -1 ions
, Lattice enthalpy of formation - CORRECT ANSWER-Enthalpy change when one mole of a solid
ionic compound is formed from its constituent ions in the gas phase
Lattice enthalpy of dissociation - CORRECT ANSWER-Energy change when 1 mol of an ionic
lattice dissociates to its gaseous ions.
standard electrode potential - CORRECT ANSWER-298K
100kPa
1.00moldm-3
Electrode reactions in lithium cell
(positive electrode) - CORRECT ANSWER-Li+ + CoO2 + e- → Li+[CoO2]-
Electrode reactions in lithium cell
(negative electrode) - CORRECT ANSWER-Li → Li+ + e-
Electrode reactions in hydrogen-oxygen fuel cell in acidic conditions
(positive electrode) - CORRECT ANSWER-02 + 4H+ +4e- -> 2H20
Electrode reactions in hydrogen-oxygen fuel cell in acidic conditions
(negative electrode) - CORRECT ANSWER-H2 -> 2H+ + 2e-
Brosted- lowry Acid - CORRECT ANSWER-proton donor
Brosted- lowry base - CORRECT ANSWER-proton acceptor
weak acids - CORRECT ANSWER-partially dissociate in aqueous solution
EXAM QUESTIONS AND
VERIFIED CORRECT
ANSWERS GRADED A+
LATEST 100% GUARANTEED
PASS
Le Chatelier's principle - CORRECT ANSWER-When a system in dynamic equilibrium is subjected
to change, the position of equilibrium will shift to oppose the change.
oxidising agents - CORRECT ANSWER-electron acceptors
reducing agents - CORRECT ANSWER-electron donors
Enthalpy of formation - CORRECT ANSWER-Enthalpy change when one mole of a compound is
formed from its constituent elements under standard conditions in their standard states
Enthalpy of atomization - CORRECT ANSWER-The energy required to produce one mole of
gaseous atoms from an element in its standard state
Electron affinity - CORRECT ANSWER-the enthaply change when one mole of gaseous atoms
forms one mole of -1 ions
, Lattice enthalpy of formation - CORRECT ANSWER-Enthalpy change when one mole of a solid
ionic compound is formed from its constituent ions in the gas phase
Lattice enthalpy of dissociation - CORRECT ANSWER-Energy change when 1 mol of an ionic
lattice dissociates to its gaseous ions.
standard electrode potential - CORRECT ANSWER-298K
100kPa
1.00moldm-3
Electrode reactions in lithium cell
(positive electrode) - CORRECT ANSWER-Li+ + CoO2 + e- → Li+[CoO2]-
Electrode reactions in lithium cell
(negative electrode) - CORRECT ANSWER-Li → Li+ + e-
Electrode reactions in hydrogen-oxygen fuel cell in acidic conditions
(positive electrode) - CORRECT ANSWER-02 + 4H+ +4e- -> 2H20
Electrode reactions in hydrogen-oxygen fuel cell in acidic conditions
(negative electrode) - CORRECT ANSWER-H2 -> 2H+ + 2e-
Brosted- lowry Acid - CORRECT ANSWER-proton donor
Brosted- lowry base - CORRECT ANSWER-proton acceptor
weak acids - CORRECT ANSWER-partially dissociate in aqueous solution
