Group 7 General Questions

Question 1

What is the colour of Bromine?

Answer 1

Orange solution

Question 2

What is the colour of Iodine?

Answer 2

Black solid/Yellow solution

Question 3

What is formed when Ag+ reacts with Cl- (and its reaction with NH3)?

Answer 3

AgCl - White ppt - Dissolves in dilute NH3

Question 4

What is formed when Ag+ reacts with Br- (and its reaction with NH3)?

Answer 4

AgBr - Cream ppt - Dissolves in concentrated NH3

Question 5

What is formed when Ag+ reacts with I- (and its reaction with NH3)?

Answer 5

AgI - Yellow ppt - Doesnt dissolve in NH3

Question 6

How is H2S recognised?

Answer 6

By its bad egg smell

Question 7

How is S recognised?

Answer 7

Yellow solid

Question 8

How is HCl recognised?

Answer 8

White misty fumes