| What is the reaction to make Carbon Dioxide in lab? | Calcium Carbonate + Dilute hydrochloric acid |
| What is the reaction to make Hydrogen in lab? | Zinc + Dilute hydrochloric acid |
| What is the reaction to make Oxygen in lab? | Manganese (VI) Oxide(Catalyst) added to Hydrogen peroxide |
| When is upward displacement used ? Give examples for the Gases collected through this method. | When gas is heavier than air
Carbon Dioxide
Sulfur dioxide
Hydrogen chloride |
| When is downward displacement used ? Give examples for the Gases collected through this method. | When gas is lighter than air
Ammonia
Hydrogen |
| When overwater used ? Give examples for the Gases collected through this method. | When gas is sparingly soluble in water
Carbon dioxide
Hydrogen
Oxygen |
| When is a gas syringe used? | To measure the volume accurately, it can be used for an gas |
| What is the test for carbonates ? | Add dilute acid
Effervescence(Carbon Dioxide) can be observed |
| What is the test for Sulfates? | Acidify with dilute nitric acid then add aqueous Barium Nitrate
White precipitate, insoluble in Nitric acid |
| What is the test for chlorides? | Acidify with dilute nitric acid , then add silver nitrate
White precipitate is formed |
| What is the test for Bromides? | Acidify with dilute nitric acid, then add silver nitrate
Cream precipitate is formed |
| What is the test for Iodides ? | Acidify with dilute nitric acid, then add silver nitrate
Yellow precipitate is formed |
| What is the test for nitrates ? | Add aqueous Sodium hydroxide, then add aluminium foil, and heat carefully
Ammonia rpoduced |
| What is the test for Ammonia ? | Turns damp red litmus paper blue |
| What is the test for Chlorine? | Bleaches damp litmus paper |
| What is the test for Oxygen ? | Relights a glowing splint |
| What is the test for Hydrogen? | Pops with alighted splint |
| What is the test for Carbon Dioxide? | Turns limewater milky |
| What are the effects of Sodium Hydroxide and Aqueous Ammonia is the cation present is Calcium? | White precipitate insoluble in excess
No precipitate |
| What are the effects of Sodium Hydroxide and Aqueous Ammonia is the cation present is Aluminium? | White precipitate soluble in excess
White precipitate insoluble in excess |
| What are the effects of Sodium Hydroxide and Aqueous Ammonia is the cation present is Zinc? | White precipitate soluble in excess
White precipitate soluble in excess |
| What are the effects of Sodium Hydroxide and Aqueous Ammonia is the cation present is Iron(II)? | Green precipitate insoluble in excess
Green precipitate insoluble in excess |
| What are the effects of Sodium Hydroxide and Aqueous Ammonia is the cation present is Chromium(III)? | Green precipitate soluble in excess(Green solution)
Green precipitate insoluble in excess |
| What are the effects of Sodium Hydroxide and Aqueous Ammonia is the cation present is Copper(II)? | Light blue precipitate insoluble in excess
Light blue precipitate soluble in excess( Dark blue solution) |
| What are the effects of Sodium Hydroxide and Aqueous Ammonia is the cation present is Iron(III)? | Red-brown precipitate insoluble in excess
Red-brown precipitate insoluble in excess |
| What are the effects of Sodium Hydroxide and Aqueous Ammonia is the cation present is Ammonium? | Ammonia produced on warming
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| Why is dilute nitric acid added to anion tests? | In order to remove an Carbonate ions that might be present, they would also produce a white precipitate giving a false positive result |
| What is the test for water ? | Turns white anhydrous copper(II) sulfate blue
Turn blue cobalt(II) chloride pink |
