Group 7 Flashcards
1
Q
what is the colour and physical state of F2?
A
pale yellow gas
2
Q
what is the colour and physical state of Cl2?
A
green gas
3
Q
what is the colour and physical state of Br2?
A
red-brown liquid
4
Q
what is the colour and physical state of I2?
A
grey solid
5
Q
when will a halogen displace a halide?
A
a halogen will displace a halide if the halide is below it in the periodic table
6
Q
the reaction of sodium hydroxide (NaOH) and chlorine
A
2NaOH + Cl2 –> NaClO + NaCl + H2O
7
Q
what is NaClO?
A
household bleach
8
Q
the reaction of chlorine with water
A
Cl2 + H2O ⇌ HCl + HClO
9
Q
the reaction of chlorine with water in the presence of UV light
A
2Cl2 + 2H2O ⇌ 4HCl + O2
