QUESTION 9   This question is about elements in Groups…

QUESTION 9   This questiоn is аbоut elements in Grоups 1 аnd 7 of the Periodic Tаble.   a The diagram (see the diagram pdf) shows two ways in which potassium can be converted into potassium chloride.   Give the names of gas X, colourless solution Y and acid Z. (3) b When sodium is burned in bromine gas, sodium bromide is formed.   b(i) Write a chemical equation for the reaction between sodium and bromine. (1) b(ii) Give a test to show that an aqueous solution of sodium bromide contains bromine ions. (3)