(a(i))[1]
State the name given to the ion $\text{Cl}^-.$
(a(ii))[1]
Which positive ion has the greatest concentration?
(a(iii))[1]
Calculate the mass of potassium ions in $200\,\text{cm}^3$ of this sample.
(a(iv))[1]
Calculate the mass of solid produced when all the water has been evaporated from the $1000\,\text{cm}^3$ sample.
(a(v))[1]
Name the compound made from $\text{Na}^+$ ions and $\text{HCO}_3^-$ ions.
(b)[2]
Describe a test for potassium ions.\n\nInclude:\n test and result
(c)[1]
Deduce the formula of potassium nitrate.
(d)[2]
Predict the products formed at the negative electrode (cathode) and the positive electrode (anode) during this electrolysis.