paper 3 Flashcards
1
Q
positive e circle thing
A
undergoes reduction (PR)
2
Q
negative e circle thing
A
undergoes oxidation (NO)
3
Q
positive electrode of a lithium cell
A
Li+ + CoO2 + e– → Li+[CoO2]
4
Q
negative electrode of a lithium cell
A
Li → Li+ + e–
5
Q
mg/ca2+ oh- observation
A
white ppt
6
Q
sr/ba2+ so42- observation
A
white ppt
7
Q
nh4+ test
A
dilute naoh + heat, damp red litmus blue
8
Q
oh- test
A
damp red litmus blue
9
Q
co32- test
A
dilute hcl, effervescence
10
Q
agcl solubility in ammonia
A
soluble in dilute or conc
11
Q
agbr solubility in ammonia
A
soluble in conc
12
Q
agi solubility in ammonia
A
insoluble
13
Q
naf h2so4 observations
A
steamy white fumes
14
Q
nacl h2so4 observations
A
steamy white fumes
15
Q
why do naf/cl not react further with h2so4
A
ions aren’t strong enough reducing agents to reduce s
