Identification Of Ions By Chemical And Spectroscopic Means (chemistry Only) (GCSE Chemistry)

Which reagent and result identify sulfate ions in an aqueous sample after acidifying with hydrochloric acid?

Which observation indicates chloride ions are present when a solution is acidified with nitric acid and then treated with silver nitrate?

Which simple chemical test is used to confirm the presence of carbonate ions in an unknown aqueous sample?

A student adds dilute hydrochloric acid to a solid sample and observes effervescence and a gas that turns limewater milky. Which ion is present in the solid?

What is the correct colour change when carbon dioxide is bubbled through limewater?

What result would you expect if an aqueous solution containing sulfate ions is treated with barium chloride without prior acidification?

Which of the following describes why flame emission (atomic emission) spectroscopy is useful for identifying metal ions?

Which cation gives a brick-red colour in a flame test and can be confirmed by its specific emission lines?

In flame tests, why is a platinum or nichrome wire cleaned in hydrochloric acid and then placed in a blue Bunsen flame before testing?

Why are samples often acidified before testing for halide ions with silver nitrate?

Which flame test colour is characteristic of sodium ions?