(a)[1]
Calculate the amount, in moles, of hydrochloric acid needed to neutralise the unreacted sodium hydroxide solution in the titration.
(b)[1]
Write the equation for the reaction between hydrochloric acid and sodium hydroxide.
(c)[1]
Calculate the amount, in moles, of sodium hydroxide neutralised in the titration.
(d)[1]
Calculate the amount, in moles, of sodium hydroxide that reacted with the $\text{HCl}$ formed by the reaction in equation 1.
(e)[1]
Calculate the amount, in moles, of $\text{HCl}$ produced by the reaction in equation 1.
(f)[1]
Calculate the amount, in moles, of $\text{XCl}_4$ in the original $0.17\,\text{g}$ sample.
(g)[1]
Calculate the molecular mass, $M_r$, of $\text{XCl}_4$.
(h)[2]
Calculate the relative atomic mass, $A_r$, of $\text{X}$ and suggest its identity.