Why is silver nitrate used to identify halide ions?
You can test to see if a solution contains chloride, bromide or iodide ions by using silver nitrate. If silver nitrate solution is added to a sample of water containing halide ions the silver halide is precipitated. This is because the silver halides are all insoluble in water.
Similarly, this reaction is used in analytical chemistry to confirm the presence of chloride, bromide, or iodide ions can be tested by adding silver nitrate solution. Samples are typically acidified with dilute nitric acid to remove interfering ions, e.g. carbonate ions and sulfide ions.
- Silver Nitrate Stick Therapy is an antimicrobial, and has anti-inflammatory and healing characteristics. Silver Nitrate Stick Therapy is a chemical cautery agent which is used to: a. Remove excess granulation tissue around stomas such as gastrotomy and tracheotomy stomas.
- Some of the silver that is eaten, inhaled, or passes through the skin may build up in many places in the body. Exposure to dust with high levels of silver compounds such as silver nitrate or silver oxide may cause breathing problems, lung and throat irritation, and stomach pain.
- The silver nitrate and potassium nitrates in caustic stick is in a dried, solid form at the tip of a wooden or plastic stick. When the material is applied to a wound or lesion, the tissue moisture or blood dissolves the dried nitrate salts, which then chemically burn the tissue. It requires moisture for activation.
A lighted wooden splint goes out in a test tube of carbon dioxide but this happens with other gases, too. It is better to bubble the test gas through limewater - calcium hydroxide solution. Carbon dioxide turns limewater cloudy white.
- Hydrogen is flammable, but oxygen is not. Flammability is the ability of a combustible material with an adequate supply of oxygen (or another oxidiser) to sustain enough heat energy to keep a fire going after it has been ignited.
- The rate of cracking and the end products are strongly dependent on the temperature and presence of catalysts. Cracking is the breakdown of a large alkane into smaller, more useful alkenes. Simply put, hydrocarbon cracking is the process of breaking a long-chain of hydrocarbons into short ones.
- To test for hydrogen gas evolved, insert a lighted splint into the test tube. The lighted splint should extinguish with a characteristic "pop" sound. Note that if there is insufficient hydrogen gas, the flame may not be completely extinguished.
When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'. The chemical that causes the solid to form is called the 'precipitant'. If silver nitrate solution is poured into a solution of sodium chloride, a chemical reaction occurs forming a white precipitate of silver chloride.
- Many of these are soluble in water, forming coloured solutions. If sodium hydroxide solution is then added, a transition metal hydroxide is formed. These are insoluble. They do not dissolve but instead form solid precipitates. Copper solutions form a blue precipitate with sodium hydroxide.
- Calcium, magnesium and aluminium all form white precipitates when reacted with sodium hydroxide. However, it is possible to identify whether the white precipitate is due to the presence of aluminium ions, as adding excess sodium hydroxide causes a precipitate of aluminium hydroxide to dissolve.
- chemical reactions:precipitation. Precipitation Reactions. A precipitate is a solid that forms out of solution. A common example is that of the mixing of two clear solutions: (1) silver nitrate (AgNO3) and (2) sodium chloride (NaCl): The reaction is. The precipitate forms because the solid (AgCl) is insoluble in water.
Updated: 6th October 2019