107 Exam 2

Question 1

Precipitate rules

Answer 1

All compounds with OH- except group 1A NH4 Ca Sr Ba

All compounds with carbonate and phosphate except group 1A and and NH4

All compounds with S ion except 1A NH4 Ca Sr Ba

Question 2

Magnesium and air

Answer 2

2Mg(s)+O2(g) - 2MgO(s)
Synthesis
Combustion

Question 3

Magnesium oxide and water

Answer 3

MgO(s)+H2O(l) —- MgOH2(s)

Question 4

Sodium Hydrogen carbonate

Answer 4

2NaHCO3(s)—— H2O(g) + CO2(g) + Na2CO3(s)

Question 5

Hydrogen peroxide

Answer 5

2H2O2(aq) —— 2H2O(aq)+ O2(g)

Question 6

Silver nitrate and copper

Answer 6

2AgNO3(aq)+ Cu(s) ——- Cu(NO3)2(aq)+ 2Ag(s)