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Balancing Equations by Inspection Chemical Equations

Learn how to balance chemical reactions on paper using the Law of Conservation. Follow the 7 steps to balance equations by inspection, checking for diatomic molecules, balancing metals and nonmetals, managing oxygen and hydrogen, and counting atoms.

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Balancing Equations by Inspection Chemical Equations

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  1. B a l a n c i n g E q u a t i o n s B y I n s p e c t i o n

  2. C h e m i c a l E q u a t i o n s A w a y t o r e p r e s e n t a c h e m i c a l r e a c t i o n o n p a p e r .

  3. E q u a t i o n s m u s t b e b a l a n c e d : A t o m s c a n b e n e i t h e r c r e a t e d n o r d e s t r o y e d b y o r d i n a r y c h e m i c a l m e a n s . (LAW OF CONSERVATION)

  4. E q u a t i o n s m u s t b e b a l a n c e d : • a l w a y s h a v e t h e s a m e n u m b e r o f e a c h t y p e o f a t o m o n b o t h s i d e s o f t h e e q u a t i o n .

  5. 7 s t e p s t o b a l a n c e b y i n s p e c t i o n 1. C h e c k f o r d i a t o m i c m o l e c u l e s - H2 - N2 - O2 - F2 - Cl2 - Br2 - I2 • I f t h e s e e l e m e n t s a p p e a r b y t h e m s e l v e s i n a n e q u a t i o n , t h e y M U S T b e w r i t t e n w i t h a s u b s c r i p t o f 2 .

  6. 7 s t e p s t o b a l a n c e b y i n s p e c t i o n 2. B a l a n c e m e t a l s (+) 3. B a l a n c e n o n m e t a l s 4. B a l a n c e o x y g e n 5. B a l a n c e h y d r o g e n

  7. 7 s t e p s t o b a l a n c e b y i n s p e c t i o n 6. R e c o u n t a l l a t o m s 7. I f E V E R Y c o e f f i c i e n t w i l l r e d u c e , r e w r i t e t h e w h o l e e q u a t i o n u s i n g t h e s i m p l e s t r a t i o o f c o e f f i c i e n t s .

  8. P r a c t i c e 1 NaOH --> Na2O + H2O 2NaOH --> Na2O + H2O Fe + O --> Fe2O3 4Fe + 3O2 --> 2Fe2O3

  9. P r a c t i c e 2 O + H --> H2O O2 + 2H2 --> 2H2O Cl + NaI --> NaCl + I Cl2 + 2NaI --> 2NaCl + I2

  10. P r a c t i c e 3 CO2 + H2O --> C6H12O6 + O 6CO2 + 6H2O --> C6H12O6 + 6O2 FeS + HCl --> FeCl2 + H2S FeS + 2HCl --> FeCl2 + H2S

  11. P r a c t i c e 4 Al(NO3)3 + H2SO4 --> Al2(SO4)3 + HNO3 2Al(NO3)3 + 3H2SO4 --> Al2(SO4)3 + 6HNO3

  12. P r a c t i c e 5 Zn + HCl --> ZnCl2 + H Zn + 2HCl --> ZnCl2 + H2

  13. P r a c t i c e 6 Al2O3 + H2O --> Al(OH)3 Al2O3 + 3H2O --> 2Al(OH)3

  14. P r a c t i c e 7 Pb(NO3)2 + AlCl3 --> PbCl2 + Al(NO3)3 3Pb(NO3)2 + 2AlCl3 --> 3PbCl2 + 2Al(NO3)3

  15. E N D E Q U A T I O N S

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