AQA A Level Chemistry Paper 1 2022 Exam with Questions and Answers – 100%
Solved
[Co(H2O)6]2+ - ✔✔✔-Pink solution
[Co(NH3)6]2+ - ✔✔✔-Straw coloured solution
[H+]=[A-] what does this assume? - ✔✔✔-all the H+ has come from the acid dissociating - water
dissociation is negligble
Acidic buffer - ✔✔✔-Weak acid and a salt of a weak acid (conjugate base)
another name for van der waals - ✔✔✔-induced dipole-dipole interactions
Are giant covalent structures soluble? - ✔✔✔-No, they are insoluble
Are ionic crystals soluble? - ✔✔✔-The ions are charged, and so are soluble in polar solvents like
water
At half neutralisation what assumptions can we make? - ✔✔✔-[HA] = [A-] So [H+ (aq)] = ka and
pH = pka
Benefits of water treatment with chlorine? - ✔✔✔-Water treatment kills harmful bacteria.
The increased cancer risk is small, but a cholera epidemic would kill thousands.
Bent (+Bond angle) - ✔✔✔-2 BP
2 LP
104.5 degrees
, AQA A Level Chemistry Paper 1 2022 Exam with Questions and Answers – 100%
Solved
Bronsted-Lowry acid - ✔✔✔-a proton donor.
Bronsted-Lowry base - ✔✔✔-proton acceptor
chlorine with water in sunlight - ✔✔✔-2HClO(aq) -> 2HCl(aq) + O2(g)
overall: 2Cl2(g) + 2H2O(l) -> 4HCl(aq) + O2(g)
Concordant results - ✔✔✔-Titres that are in agreement usually within 0.10cm3 of each other
Dative Bond (Coordinate Bond) - ✔✔✔-the shared pair of electrons in the covalent bond come
from only one of the bonding atoms
definition of pH - ✔✔✔--log10[H+]
Definition of pKa - ✔✔✔--log10Ka
disproportionation reaction - ✔✔✔-an element in one oxidation state is simultaneously
oxidized and reduced
Does changing the pressure alter Kp? - ✔✔✔-Changing pressure does not alter Kp.
electronegativity - ✔✔✔-the power of an atom to attract a PAIR of electrons in a covalent bond.
equivalence point - ✔✔✔-At the equivalence point, the acid is just about neutralised [OH-] =
[H+]
Solved
[Co(H2O)6]2+ - ✔✔✔-Pink solution
[Co(NH3)6]2+ - ✔✔✔-Straw coloured solution
[H+]=[A-] what does this assume? - ✔✔✔-all the H+ has come from the acid dissociating - water
dissociation is negligble
Acidic buffer - ✔✔✔-Weak acid and a salt of a weak acid (conjugate base)
another name for van der waals - ✔✔✔-induced dipole-dipole interactions
Are giant covalent structures soluble? - ✔✔✔-No, they are insoluble
Are ionic crystals soluble? - ✔✔✔-The ions are charged, and so are soluble in polar solvents like
water
At half neutralisation what assumptions can we make? - ✔✔✔-[HA] = [A-] So [H+ (aq)] = ka and
pH = pka
Benefits of water treatment with chlorine? - ✔✔✔-Water treatment kills harmful bacteria.
The increased cancer risk is small, but a cholera epidemic would kill thousands.
Bent (+Bond angle) - ✔✔✔-2 BP
2 LP
104.5 degrees
, AQA A Level Chemistry Paper 1 2022 Exam with Questions and Answers – 100%
Solved
Bronsted-Lowry acid - ✔✔✔-a proton donor.
Bronsted-Lowry base - ✔✔✔-proton acceptor
chlorine with water in sunlight - ✔✔✔-2HClO(aq) -> 2HCl(aq) + O2(g)
overall: 2Cl2(g) + 2H2O(l) -> 4HCl(aq) + O2(g)
Concordant results - ✔✔✔-Titres that are in agreement usually within 0.10cm3 of each other
Dative Bond (Coordinate Bond) - ✔✔✔-the shared pair of electrons in the covalent bond come
from only one of the bonding atoms
definition of pH - ✔✔✔--log10[H+]
Definition of pKa - ✔✔✔--log10Ka
disproportionation reaction - ✔✔✔-an element in one oxidation state is simultaneously
oxidized and reduced
Does changing the pressure alter Kp? - ✔✔✔-Changing pressure does not alter Kp.
electronegativity - ✔✔✔-the power of an atom to attract a PAIR of electrons in a covalent bond.
equivalence point - ✔✔✔-At the equivalence point, the acid is just about neutralised [OH-] =
[H+]
