2:41 (Triple only) describe an experiment to prepare a pure, dry sample of an insoluble salt, starting from two soluble reactants

Precipitation Method:

Preparing pure dry crystals of silver chloride (AgCl) from silver nitrate solution (AgNO₃) and potassium chloride solution (KCl)

Step	Explanation
Mix the two salt solutions together in a beaker	Forms a precipitate of an insoluble salt (AgCl)
Stir with glass rod	Make sure all reactants have reacted
Filter using filter paper and funnel	Collect the precipitate (AgCl)
Wash with distilled water	Removes any the other soluble salts (KNO₃)
Dry by leaving in a warm place	Evaporates the water

Past paper questions on spec point:

Spec	Q'stion	Ans	MS
2:41	Jan '12 (2), Q 3 a i	Answer	MkS
2:41	Jan '12 (2), Q 3 a ii	Answer	MkS
2:41	Jan '12 (2), Q 3 a iii	Answer	MkS
2:41	Jan '12 (2), Q 3 b	Answer	MkS
2:41	Jan '13 (2), Q 5 c	Answer	MkS
2:41C	Jan '15 (1), Q 10 a	Answer	MkS
2:41C	Jan '16 (1), Q 11 c ii	Answer	MkS
2:41C	Jan '17 (1), Q 8 b	Answer	MkS
2:41	May '11 (2), Q 7 c i	Answer	MkS
2:41	May '12 (1), Q 3 c i	Answer	MkS
2:41	May '12 (1), Q 3 c ii	Answer	MkS
2:41	May '12 (1), Q 3 c iii	Answer	MkS
2:41	May '12 (1), Q 3 c iv	Answer	MkS
2:41C	May '15 (1R), Q 6 a	Answer	MkS
2:41C	May '15 (1R), Q 6 b i	Answer	MkS
2:41C	May '15 (1R), Q 6 b ii	Answer	MkS
2:41C	May '15 (1R), Q 6 b iii	Answer	MkS
2:41C	May '15 (1R), Q 6 b iv	Answer	MkS
2:41C	May '15 (1R), Q 6 b v	Answer	MkS
2:41C	May '16 (2R), Q 7 a	Answer	MkS