P block 3 Flashcards
1
Q
F2 + H2O ——>
A
HF + O2
2
Q
Cl2 + H2O—–>
A
HCl + HOCl
3
Q
Br2 + H2O ——>
A
HBr + HOBr
4
Q
I2 + H2O—->
A
Reverse rxn occurs
HI + O2 ——> H2O + I2
5
Q
Deacons process
A
HCl + O2 ——–>(presence of CuCl2) H2O + Cl2
6
Q
Prep of Cl2 using MnO2
A
MnO2 + HCl —-> Cl2 + MnCl2 + H2O
or
MnO2 + NaCl + H2SO4 —-> Cl2 + MnCl2 + H2O + NaHSO4
7
Q
Cl2 using KMnO4
A
KMnO4 + HCl —–> Cl2 + KCl + MnCl2 + H2O
8
Q
Cl2 water on standing loses color due to formation of:
A
HCl + HOCl
The HOCl gives nascent O responsible for oxidising properties
9
Q
Au rxn with aqua regia
A
Au —–> [AuCl4]- + NO + H2O
10
Q
Pt + aqua regia
A
[PtCl6]2- + NO + H2O
11
Q
PCl5 and PCl3 which color and state
A
PCl5: yellowish white powder
PCl3: colorless oily liquid
