Group 2

Question 1

Test for Sulphates

Answer 1

•add HCl and Barium Chloride(BaCl2)
•if sulphate is present, white precipitate will be formed which is Barium sulphate as it is insoluble

Question 2

Solubility of group 2 sulphates

Answer 2

•Most soluble—>least soluble
•as you go down the group

Question 3

Solubility of group 2 hydroxides

Answer 3

•Least soluble—> most soluble
•as you go down the group

Question 4

Mg(OH)2 and BaS04 are

Answer 4

Precipitates or form precipitates as they are insoluble

Question 5

Barium sulphate is used for

Answer 5

X-rays in medicine

Question 6

Magnesium hydroxide is used for

Answer 6

Indigestion

Question 7

Reaction of group 2 metals with water

Answer 7

•Produces metal hydroxide and Hydrogen
Example>
•Mg + 2H20 —> Mg(OH)2 + H2

Question 8

Reaction of Magnesium with steam and observation

Answer 8

•Forms oxide and Hydrogen
•Mg + H20(g) —> MgO + H2
•Bright lights

Question 9

Adding carbonate to acid forms? and observation

Answer 9

Co2/effervescence

Question 10

Oxide + acid forms

Answer 10

Salt + Water
example> Mg0 + 2HCL —> MgCl2 + H20