1Which of the following anions will produce a colorless gas with a suffocating odor when treated with dilute sulfuric acid, and will turn moist blue litmus paper red?
2When acidified silver nitrate is added to a solution containing chloride ions, what type of precipitate is formed, and how does it behave in ammonia solution?
3Which anion, when reacted with acidified potassium permanganate and CCl₄, will result in a reddish-brown color in the CCl₄ layer?
4The Brown-Ring Test is used to identify which anion?
5A student adds dilute sulfuric acid to an unknown solution and observes bubbles. The gas produced turns lime-water cloudy. Which anion is likely present?
6What is the expected observation if acidified barium chloride is added to a solution containing sulphate ions?
7If moist lead(II) ethanoate paper turns black when held over a reacting mixture with dilute acid, what gas is being produced, and which anion is likely present?
8A pale yellow precipitate is formed when acidified silver nitrate is added to an unknown solution. This precipitate is only sparingly soluble in concentrated ammonia. Which halide is indicated?
9The disappearance of the purple color of acidified potassium permanganate, without any color change in the CCl₄ layer, indicates the presence of which anion?
10In the qualitative analysis of anions, the cations provided are sodium, potassium, or ammonium. Why are these specific cations chosen?
