Which feature in the structure of compound P indicates that it is unsaturated?
Describe how the colour of aqueous bromine changes when excess compound P is added to it.
What state is compound P in at $-120\,^\circ\text{C}$? Explain your answer.
Draw the structure of ethanol, showing all atoms and every bond.
Complete the sentences about fermentation by choosing words from the list.\n\nA flask containing [BLANK] solution and yeast is warmed to [BLANK]. The yeast contains [BLANK] that catalyse the reaction. The ethanol is then separated by [BLANK].
Ethanol can serve as a fuel. State one other industrial use of ethanol.
Explain how this diagram shows that the reaction is exothermic.
State the names of two other products that can be formed when ethanol burns in a limited supply of air.