Ion Testing Flashcards
(14 cards)
Describe a test for group 2 ions using sodium hydroxide
1) Add 10 drops barium chloride
2) Add 10 drops dilute sodium hydroxide
3) Mix and continue to add sodium hydroxide drop wise until in excess
What colour will barium bromide be:
1) Initially
2) After 10 drops NaOH
3) Excess NaOH
1) Colourless solution
2) Colourless solution
3) Colourless solution
What colour will calcium bromide be:
1) Initially
2) After 10 drops NaOH
3) Excess NaOH
1) Colourless solution
2) Slightly white precipitate
3) Slightly white pprecipitate
What colour will magnesium be:
1) Initially
2) After 10 drops NaOH
3) Excess NaOH
1) Colourless solution
2) Slightly white ppt
3) White ppt
What colour will strontium chloride be:
1) Initially
2) After 10 drops NaOH
3) Excess NaOH
1) Colourless solution
2) Slightly white ppt
3) Slightly white ppt
What is the only group 2 ion to remain a colourless solution>
Barium chloride
What is the only group 2 ion to turn into a white ppt after excess NaOH?
Magnesium chloride
Describe a test for group 2 ions using dilute sulfuric acid
1) Add 10 drops barium chloride
2) Add 10 drops sulfuric acid
3) continue to add sulfuric acid drop wise until in excess
What colour will barium chloride be:
1) After 10 drops sulfuric acid
2) Excess sulfuric acid
1) White ppt
2) White ppt
What colour will calcium bromide be:
1) After 10 drops sulfuric acid
2) Excess sulfuric acid
1) Slightly white ppt
2) Slightly white ppt
What colour will magnesium chloride be:
1) After 10 drops sulfuric acid
2) Excess sulfuric acid
1) Slightly white ppt
2) Colourless solution
What colour will strontium chloride be:
1) After 10 drops sulfuric acid
2) Excess sulfuric acid
1) White ppt
2) White ppt
What are the overall results for group 2 ions?
