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AgNO 3 ( aq ) + NaCl( aq ) AgCl( s ) + NaNO 3 ( aq )

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AgNO 3 ( aq ) + NaCl( aq ) AgCl( s ) + NaNO 3 ( aq ) - PowerPoint PPT Presentation


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AgNO 3 ( aq ) + NaCl( aq ) AgCl( s ) + NaNO 3 ( aq ). What happens when you put AgNO 3 and NaCl in water?. AgNO 3 ( aq ) + NaCl( aq ) AgCl( s ) + NaNO 3 ( aq ). What really happens when you put AgNO 3 and NaCl in water?. KEY POINT: NaCl ( aq )

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slide1

AgNO3 (aq) + NaCl(aq) AgCl(s) + NaNO3(aq)

What happens when you put

AgNO3 and NaCl in water?

slide2

AgNO3 (aq) + NaCl(aq) AgCl(s) + NaNO3(aq)

What really happens when you put

AgNO3 and NaCl in water?

slide3

KEY POINT:

NaCl (aq)

really means:

Na +1(aq) + Cl -1(aq)

“dissociated ions”

or

“ions in solution”

what is dissolving
What is Dissolving ?

When an ionic compound (eg salt) dissolves in water, the compound disassociates. (breaks apart into cations and anions)

Ex: Ca(NO3)2(s)Ca2+(aq) + 2NO3-(aq)

When a covalent compound (eg sugar) dissolves in water, the molecules simply disperse; they do not disassociate. Molecules of the covalent compounds simply disperse due to attraction with polar water molecules.

slide5

An Ionic Compound Dissolves:

A Covalent Compound Dissolves:

slide6

KEY POINT:

Mg(NO3)2(aq)

really means:

Mg +2(aq) + (NO3) -1(aq)

2

“dissociated ions”

or

“ions in solution”

slide7

KEY POINT:

AgCl (s)

really means:

AgCl (s)

Solid Silver (I) Chloride.

slide8

AgNO3 (aq) + NaCl(aq) AgCl(s) + NaNO3(aq)

What happens when you put

AgNO3 and NaCl in water?

slide9

AgNO3

NaCl

slide10

NO3-

Na+

Ag+

Cl-

slide11

Na+

NO3-

Ag+

Cl-

slide12

Na+

NO3-

AgCl

slide13

Na+

NO3-

AgCl(s)

precipitate

AgCl

slide14

NO3-

Na+

NO3-

NO3-

Na+

Na+

Na+

NO3-

NO3-

Na+

Na+

Na+

NO3-

NO3-

Na+

NO3-

Na+

AgCl(s)

slide16

AgCl

Na+

NO3-

Reaction

slide17

No Reaction

Na+

NO3-

AgCl

slide18

These ions do not participate

in the reaction. They are called

SPECTATOR IONS

Na+

NO3-

AgCl

slide23
Complete molecular equation-
    • describes double replacement reaction
  • Complete ionic equation-
    • more accurately shows the reacting species as ions and the products either as ions or a precipitate
  • Net ionic equation-
    • focuses only on the ions REACTING
  • Spectator ions are those ions that do NOT participate in the reaction
predicting the formation of a precipitate
PREDICTING THE FORMATION OF A PRECIPITATE
  • Consider the possibility that a precipitate may form.
  • Must use the solubility table on page 227 to decide.
  • Possible outcomes
    • No visible reaction (nvr)
    • Formation of one ppt.
    • Formation of two ppt. (rare occurrence)
slide25

Basic Chemical equation AgNO3(aq) + KCl(aq)AgCl(s) + KNO3(aq)

Complete ionic equation shows ions in solution Ag+ (aq)+NO3(aq) + K+ (aq)+Cl-(aq)AgCl(s) + K+ (aq) + NO3-(aq)

Net ionic equation shows ions in rxn Ag+ (aq)+Cl-(aq)AgCl(s)

(leave out spectator ions)

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