acidic and basic behaviour of the period 3 oxides

Question 1

what can Na2O and MgO act as ?

Answer 1

• Bronsted lowry bases

Question 2

compare the solubility of NaOH and Mg(OH)2 ?

Answer 2

• NaOH is more soluble than Mg(OH)2 so it releases more OH-
• so it has a higher pH

Question 3

give the equation for P4O10 reacting with water ?

Answer 3

P4O10 (s) + 6 H2O (l)—> 4 H3PO4 (aq)

Question 4

give the equation for H3PO4 reacting with water ?

Answer 4

H3PO4 (aq) + H2O —> H2PO4- (aq) + H3O+

Question 5

give the equation for SO2 reacting with water ?

Answer 5

SO2 (g) + H2O (l) —> H2SO3 (aq)

Question 6

give the equation for H2SO3 reacting with water ?

Answer 6

H2SO3 (aq) + H2O (l) —> <— HSO3- (aq) + H3O+ (aq)

Question 7

give the equation for SO3 reacting with water ?

Answer 7

SO3 (g) + H2O (l) —> H2SO4 (aq)

Question 8

give the equation for H2SO4 reacting with water ?

Answer 8

H2SO4 (aq) + H2O (l) —> <— H2SO4- (aq) + H3O+ (aq)

Question 9

give the equation for P4O10 reacting with NaOH

Answer 9

P4O10 (s) + NaOH (aq) —> 4Na3PO4 (aq) + 6 H2O

Question 10

what is the ionic equation for the reaction between P4O10 and NaOH ?

Answer 10

P4O10 + 12OH- —> 4PO4 3- + 6H2O