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Concept Review Chapter 9
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potassium chloride + silver nitrate potassium nitrate + silver chloride
Look up each part: potassium chloride silver nitrate Symbol K1+ Cl1- Ag1+ NO31- - + + - + - + - ALL THE FORMULAS ARE BALANCED! KCl + AgNO3 KNO3 + AgCl IS THE EQUATION BALANCED?
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Aluminum hydroxide + sodium nitrate aluminum nitrate + sodium hydroxide.
OH1- Na1+ NO31- Now all the compounds are balanced! Balance the equation. 1+ 1- 3+ 1- 1+ 3+ 1- 1- ( )3 Al OH Na NO3 Al NO NaOH 3 ( )3 3 1 Al, 3OH, 3 Na, 3 NO3 REACTANTS PRODUCTS
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Iron metal + copper(II) sulfate iron (II) sulfate + copper metal
Fe (elements have no charge) Cu2+ SO42- Fe2+ Cu (elements have no charge) Fe CuSO4 FeSO Cu
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Aluminum metal + copper (II) chloride aluminum chloride + copper metal
aluminum ion Al (elements have no charge) Cu2+ Cl1- Al3+ 2+ 1- 3+ 1- 2 Al Cu Cl Al Cl Cu 3 2 3 2 3 Elements have no charge!
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potassium bromide potassium metal and bromine
potassium ion bromide potassium metal bromine gas K1+ Br1- K (elements have no charge) Br2 2 KBr K + Br2 2 Don’t forget about the HONClBrIF “club” H2 O2 N2 Cl2 Br2 I2 F2
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Predicting Products of Chemical Reactions.
1. aluminum sulfate + calcium phosphate Aluminum Sulfate + Calcium phosphate Aluminum phosphate + Calcium Sulfate 3( )2 2 Al3+PO43- Ca2+PO43- Al3+ SO42- + 2 ( )3 3 Ca2+SO42- + Balanced!
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Sodium chlorate Na ClO3 Na Cl O2 Sodium Na1+ chlorate ClO31- +
Sodium chloride and oxygen gas are formed.
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