Question

Mg_ Bubbles Gas . D. Reactions of Ionic Compounds D1 Reaction of CaCl, and Na,PO4 Reactants 1. Appearance of Solutions 2. Evidence of a Chemical Reaction CaCl2(aq) Na PO,(aq) 3. — CaCl2(aq) + — Na3PO4(aq) → _Caz(PO4)2(s) + __NaCl(aq) 4. Type of reaction: D2 Reaction of FeCl, and KSCN Reactants 1. Appearance of Solutions 2. Evidence of a Chemical Reaction FeCl3(aq) KSCN(aq) 3.- FeCl3(aq) + __KSCN(aq) _ Fe(SCN)3(aq) + ___KCl(aq) 4. Type of reaction: E. Sodium Carbonate and HCI Reactants 1. Appearance of Reactants 2. Evidence of a Chemical Reaction HCl(aq) Na,CO3(s)

Answer 1

ANSWER:

Part D - Reactions of ionic compounds

This type of reaction is characterized by the formation of a precipitate

Part	Reactants	Appearance of solution	Evidence of a chemical reaction
D1	CaCl2 (aq)	colorless solution	Formation of a white precipitate
	Na3PO4 (aq)	colorless solution
D2	FeCl3 (aq)	yellow solution	Formation of a dark red solution
	KSCN	colorless solution

The balanced chemical reactions of each part are

Part	Balanced equation	Type of reaction
D1	$3\, CaCl_{2}\, (aq)+2\, Na_{3}PO_{4}\, (aq)\rightarrow Ca_{3}(PO_{4})_{2}\, (s)+6\, NaCl\, (aq)$	Precipitation reaction - Double replacement reaction
			D2	$FeCl_{3}\, (aq)+3\, KSCN\, (aq)\rightarrow Fe(SCN)_{3}\, (aq)+3\, KCl\, (aq)$	Complexation reaction - Double replacement reaction

Both reaction are double replacement reactions, the first one produces a precipitate whereas the second one produces a colored complex

Part E - Sodium carbonate and HCl

Reactants	Appearance of reactants	Evidence of a chemical reaction
HCl (aq)	colorless solution	Formation of bubbles
Na2CO3 (s)	white powder

Answer 2

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1: APPEARENCE Cacia (aq) Colourless 2. Evidence for Reaution white preúpitale of (a3(PO4)2 Colourless formed 3.) 3 cacla + 2 Na3PO4 → 1 caz (PO4)2 + 6 Nall (aq) (aq) 4.) TYPE OF Reaction - Double Displacement Reaution (5) D2 Evidence Reaction FeCl3(aq) KSCN (aq) 1. APPEARENCE 2. for yellow colour quon - Red Colorless color formation 3) 1 Fells (aq) + 3 KSCN → 1 felb cu )3 + 3.KLI (29) (09) (aq) 4.) Type of Reaction Double Ops plaument Reaction E.) Sodium Caubonate the ACID + Base Reaction ? Reatant Evolution of coa Hll (aq) → Colourless with Brisk effewesence Naz (O3(aq) colorless J 2HCl + Nag 03 - lag) lan) 2HCl + Nag 63 CouHa Ole) + 2Nove lan)