Chemical testings for negative molecular ions
- Created by: Katy **
- Created on: 23-04-14 16:45
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- Molecular ions
- Sulfate ions
- (SO4)2-
- substance a solid
- dissolve in water
- solution
- dissolve in water
- reagant
- Barium chloride solution
- Hydrochloric acid
- Ba2+(aq) + (SO4)2-(aq) ? BaSO4(s)
- ionic equation
- barium sulfate
- BaSO4
- white ppt
- Chloride ions
- (CO3)2-
- either solid or solution
- reagant
- Hydrochloric acid
- observation
- bubbles
- fizz
- gas given off turns limewater milky
- carbon dioxide
- Calcium carbonate + Hydrochloric acid ? Calcium chloride + Water + Carbon doxide
- CaCO3 + 2HCl ? CaCl2 + H2O + CO2
- Ammonium ions
- (NH4)-
- either solid or solution
- reagant
- Sodium hydroxide solution
- HEAT
- observation
- gas given off turns damp litmus paper blue
- ammonia
- NH3
- red ? blue
- ammonia
- gas given off turns damp litmus paper blue
- Sulfate ions
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