halogens displacement reactions

Question 1

whats a displacement reaction

Answer 1

Group 7 elements undergo displacement reactions with halides in solution

Question 2

what will a more reactive group 7 element

Answer 2

A more reactive Group 7 element will displace a halide of a less reactive halogen from

Question 3

whats the observation with the halogen chlorine and the halide bromide

Answer 3

colourless solution
changes to orange

Question 4

whats the observation with the halogen chlorine and the halide iodide

Answer 4

colourless solution
changes to brown

Question 5

whats the observation with the halogen bromine and the halide iodide

Answer 5

colourless solution
changes to orange on
addition of bromine
water and darkens to
brown

Question 6

1 whats the equation for a displacement reaction with chlorine and bromide
2 what about the ionic equation

Answer 6

1. Cl₂ + 2KBr → 2KCl + Br₂
2. Cl₂ + 2Br- → 2Cl- + Br₂

Question 7

why does the ionic equation not include potassium

Answer 7

The ionic equation does not include the potassium ion as this ion does not take part in the reaction

Question 8

whats bromine water

Answer 8

Bromine water is a solution of bromine and it is orange to begin with when added but darkens to brown as iodine is formed.

Question 9

what colour is the group one halide
aka potassium

Answer 9

colourless