What are the chemical tests for aqueous potassium bromide and aqueous sodium chloride please?
Ulex replies ‘Sodium and potassium compounds can be distinguished by flame tests. Halides can be tested for by adding a little dilute nitric acid followed by silver nitrate solution. Chlorides give a white precipietate of silver chloride which dissolves readily in ammonia solution. Silver bromide is very pale yellow and is more reluctant to dissolve in ammonia. Silver iodide is a darker yellow and does not dissolve in ammonia.’ Risk assessment Before attempting any practical work based on the advice and suggestions on this website, you must do the following. Identify any hazards, assess the risks from these hazards, and then decide appropriate control measures to reduce the risks. You must have these approved by those in authority in your school or college laboratory. Do not rely on what is said on this website. For further guidance see our tutorial on Risk Assessment.
