G2, G7, REDOX Flashcards
1
Q
oxidising agent
A
gains electrons and causes other species to lose electrons
2
Q
X has lower boling point than Y (same group)
A
X is smaller
less shielding
less and weaker imf between X molecules
3
Q
enthalpy change
A
ΣFproducts - ΣFreactants
ΣCreactants - ΣCproducts
4
Q
HCl bad
A
poisonous and can be easily lost since its a gas
5
Q
why enthalpy change is NOT zero
A
not in standard state
6
Q
low-grade ore extraction
A
uses cheap/scrap material
is a single step process
less energy required for extraction
7
Q
chlorine toxic but in pools
A
Only used in small amounts
8
Q
chlorine toxic but pools
A
small amounts
health > risks
9
Q
excess alkali and equilibrium
A
alkali ions react with acid
equilibrium moves to the right
10
Q
Cl2 + H2O -> HOCl + HCl
A
HOCl = +1 HCl = -1 Cl2 = 0
11
Q
Br reacts differently than Cl
A
Br bigger
more easily oxidised
