State what the term base means.
State the name given to a base that dissolves to make an aqueous solution.
State the colour of thymolphthalein in NaOH(aq).
Complete the word equation for the reaction between NaOH(aq) and ammonium chloride. sodium hydroxide + ammonium chloride → [BLANK] + [BLANK] + [BLANK]
State the name used for metal oxides that react with bases such as NaOH(aq).
Name one metal oxide that reacts with NaOH(aq).
Complete the dot-and-cross diagram in Fig. 4.1 for a molecule of ethanoic acid.
Suggest the pH expected for dilute ethanoic acid.
Complete the symbol equation to show the dissociation of ethanoic acid. CH$_3$COOH [BLANK]
Write the ionic equation for the reaction when an acid neutralises a soluble base.
Calculate the concentration of H$_2$SO$_4$, in g/dm$^3$, by carrying out these steps: • Find the number of moles of KOH used. • Work out how many moles of H$_2$SO$_4$ react with the KOH. • Determine the concentration of H$_2$SO$_4$ in mol/dm$^3$. • Determine the concentration of H$_2$SO$_4$ in g/dm$^3$.