Lab 3B

Question 1

what happens when 2 – 3 drops of Ba(OH)2(aq) reacts with carbon dioxide

Answer 1

A white precipitate is formed and some precipitate sank to the bottom of the solution and some precipitate float on the top of the solution.

Question 2

chemical equation of ba(oh)2 and co2

Answer 2

Ba(OH)2(aq) + CO2(g) –> BaCO3(s) + H2O(l)

Question 3

what happens when Nacl reacts with agno3

Answer 3

_(NaCl) Colourless solution turned white with white precipitate. After one minute, the precipitate
sank to the bottom.

Question 4

what happens when nal reacts with agno3

Answer 4

(NaI) Colourless solution turned milky yellow with yellow precipitate. After one minute, the precipitate
sank to the bottom.

Question 5

chemical equation between nal and agno3

Answer 5

NaI(aq) + AgNO3(aq) –> AgI(s) + NaNO3(aq)

Question 6

chemical equation between nacl and agno3

Answer 6

NaCl(aq) + AgNO3(aq) –> AgCl(s) + NaNO3(aq)___-

Question 7

what happens when na2so4 reactions with ba(oh)2

Answer 7

The colourless solution gradually turned into a milkier and milkier solution with white
precipitate._______

Question 8

reaction between na2so4 and ba(oh)2

Answer 8

Na2SO4(aq) + Ba(OH)2(aq) –> BaSO4 (s)+2NaOH(aq) _