Lab 21

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• Lab 21 IONIC REACTIONS(I will accept this by
  Monday after the review)!
• FOR EACH REACTION THAT HAD A VISABLE RESULT
• WRITE THE FORMULAS OF THE REACTANTS.
• PREDICT THE PRODUCTS WITH CORRECT FORMULAS.
• CLASSIFY THE REACTANTS AND REACTIONS.
• Classify reactants using the acid and base tables
  (K,L). Salts have a metal and non metal (or
  non-metal polyatomic ion).
• Use this PowerPoint to get formulas.
• Do NOT write an intro or discussion.
• Write each reaction you saw.
• Predict solubility using table F.(PowerPoint 267)

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LAB 21 TYPES OF REACTIONS,IONIC REACTIONS AND
SOLUBILITY
DIRECTIONS THIS LAB IS DUE ON FRIDAY JUNE 15 (BY
E MAIL AS A WORD ATTACH), OR AT WEEKEND REVIEW ON
THE 16 OR 17, IF YOU ATTEND MONDAYS LAB REVIEW AT
100, THE LAB IS DUE ON REGENTS DAY.

• PROCEDURE FORMULA OF A SALT (CRISS-CROSS).
• LOOK UP EACH WORD ON TABLS S FOR ELEMENTS AND
  TABLE E FOR POLYATOMIC IONS. YOU MAY HAVE TO
  USE BOTH IF YOU DO NOT RECOGNISE THE SUBSTANCE.
• PUT POLYATOMIC IONS IN PARENTHESIS, GET THE
  CHARGE FROM TABLE E.
• GET THE CHARGE OF ELEMENTS FROM THE REDOX RULES
  OR GROUP IT IS IN.
• USE THE CRISS CROSS METHOD TO GET SUBSCRIPTS.

Table E
(
)
Ca3PO4 2
Ca2
PO4 3-
(
)
USE ABSOLUTE VALUE
3
2
3
WRITING THE DISSOCIATION OF A SALT
1)WRITE THE FORMULA. 2)USING TABLE E AND
WRITE THE PRODUCT POLYATOMIC ION AS AN ION. 3)
USE THE REDOX RULES TO GET THE CHARGE OF THE
ION (MOSTLY A A METAL)
(
)
Ca3 PO4 2
NEUTRAL, NO CHARGE WRITTEN
0 2(3-)
(X) X2
(
)
Ca3 PO4 2
?2
PO4 3-
(
)
Ca2
3

Ca IS IN GROUP TWO, ANOTHER WAY TO GET THE CHARGE
OF 2
4
WRITING THE DISSOCIATION OF A SALT
1)WRITE THE FORMULA. 2)USING TABLE E AND
WRITE THE PRODUCT POLYATOMIC ION AS AN ION. 3)
USE THE REDOX RULES TO GET THE CHARGE OF THE
ION (MOSTLY A A METAL)
(
)
Ca NO3 2
NEUTRAL, NO CHARGE WRITTEN
0 2(1-)
(X) X2
(
)
Cu NO3 2
?2
NO3 1-
(
)
Cu2

Cu HAS MULTIPLE STATES SO YOU HAVE TO SOLVE IT
THIS WAY
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• TYPES OF REACTIONS
• SYNTESIS A B ? C A PRODUCT LARGER THAN
  EITHER REACTANT IS PRODUCED, 2 OR MORE REACTANTS
  AND ONE PRODUCT.
• N2 3H2 ? 3 NH3 (ELEMENTAL FORMATION
  REACTION(SYSNTESIS TYPE)
• 2 CO O2 ? 2 CO2
• DECOMPOSITION (CHEMICAL, NOT NUCLEAR) C ? A B
  ONE REACTANT AND TWO OR MORE PRODUCTS.
• 2 NaHCO3 ? Na2CO3 CO2(g) H2O
• NEUTRALIZATION ACID BASE ? SALT WATER,
• HCl NaOH ? NaCl H2O
• H3PO4 KOH ? K3PO4 3 H2O
• DOUBLE REPLACEMENT (DISPLACEMENT) MUST HAVE A
  PRECIPITATION AB CD ? AD CB.
• Pb(NO3)2 K2CrO4 ? PbCrO4 2 KNO3
• SINGLE REPLACMENT ( DISPLACEMENT) A TYPE OF
  REDOX.
• Fe Cu(NO3)2 ? Fe (NO3)2 Cu
• 0 2 2
  0

reduction
oxidation
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• TYPES OF REACTIONS
• 6) COMBUSTION A HYDROCARBON REACTANT REACTS
  WITH O2 RELEASING ENERGY.
• C8H18 25 O2 ? 16CO2 18 H2O
• 7) OXIDATION A SUBSTANCE REACTS WITH OXYGEN.
• 4Al 3 O2 ? 2 Al2O3
• LOOK AT POWER-POINT 281 TABLE I, THIS IS IMP.