Group 2

Question 1

Reaction with water?

Answer 1

-Mg forms MgO and H2 from steam
-The rest form hydroxides and H2

Question 2

Reaction with HCl?

Answer 2

-M + 2HCl—> MCl2 + H2

Question 3

Reaction with H2SO4?

Answer 3

M + H2SO4 ——> MSO4 + H2

Question 4

Trend in solubility of sulfates?

Answer 4

Decreases down the group.
Ca, Sr, Ba are insoluble.

Question 5

G2 oxides with water?

Answer 5

Form hydroxides

Question 6

Trend in hydroxide solubility?

Answer 6

Increases down the group

Question 7

G2 oxides and acid?

Answer 7

With HCl- salt and water
With dilute H2SO4- sulfate and water

Question 8

G2 hydroxides and acid?

Answer 8

With HCl- salt and water
With dilute H2SO4- sulfate and water

Question 9

Solubility of G2 carbonates?

Answer 9

All soluble except BeCO3

Question 10

G2 carbonates and acid form what kind of salts?

Answer 10

With HCl- soluble salts + water + CO2
With H2SO4- sulfates + water + CO2

Question 11

Trend in thermal stability?

Answer 11

Increases down the group

Question 12

Trend in reactivity?

Answer 12

Increases down the group

Question 13

Trend in mp and bp?

Answer 13

Decreases down the group

Question 14

Trend in density?

Answer 14

Increases down the group