Describe the colours shown by the Group 17 elements, from chlorine to iodine, at room temperature.
Describe how the oxidising ability of the elements chlorine to iodine compares.
State the observation when chlorine reacts with hydrogen.
Explain why the thermal stability of the hydrogen halides falls down the group.
Define what is meant by a free radical.
State the condition needed for chlorine to react with $\text{C}_2\text{H}_6$ at room temperature.
Write two equations that represent the propagation steps in this reaction.
Identify a reagent and conditions that can be used to convert chlorine into $\text{NaClO}$.
Define what is meant by disproportionation.
Fill in the boxes with numbers to balance the equation for the reaction of propanone with $\text{NaClO}$. $\text{CH}_3\text{COCH}_3 + \square\, \text{NaClO} \rightarrow \square\, \text{CHCl}_3 + \square\, \text{CH}_3\text{COONa} + \square\, \text{NaOH}$
An aqueous solution of $\text{AgNO}_3$, dissolved in ethanol, is added to aqueous $\text{CHCl}_3$. State the observation for this reaction. Explain your answer.