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Understanding Chemical Equations: Importance of Balancing and How to Achieve It

Learn why chemical equations must be balanced and how to achieve balance by inspection method. Find out why balancing is crucial in representing chemical reactions accurately. Steps to balance equations efficiently. Examples included.

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Understanding Chemical Equations: Importance of Balancing and How to Achieve It

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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. W h a t d o t h e y R e p r e s e n t • W h y M u s t t h e y b e B a l a n c e d • B a l a n c i n g B y I n s p e c t i o n

  3. 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 .

  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 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 .

  5. E q u a t i o n s m u s t b e b a l a n c e d : T h i s m e a n s w e m u s t 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 .

  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 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 .

  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 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

  8. 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 .

  9. B a l a n c e t h i s e q u a t i o n K C l O 3 --> K C l + O 2 K C l O 3 --> 2 K C l + 3 O 2

  10. B a l a n c e t h i s e q u a t i o n Na2O2 + H2O --> NaOH + O 2Na2O2 + 2H2O --> 4NaOH + O2

  11. B a l a n c e t h i s e q u a t i o n Al + H2SO4 --> Al2(SO4)3 + H 2Al + 3H2SO4 --> Al2(SO4)3 + 3H2

  12. B a l a n c e t h i s e q u a t i o n Hg(OH)2 + H3PO4 --> Hg3(PO4)2 + H2O 3Hg(OH)2 + 2H3PO4 --> Hg3(PO4)2 + 6H2O

  13. B a l a n c e t h i s e q u a t i o n KI + Cl --> KCl + I 2KI + Cl2 --> 2KCl + I2

  14. B a l a n c e t h i s e q u a t i o n NH3 + O --> N + H2O 4NH3 + 3O2 --> 2N2 + 6H2O

  15. B a l a n c e t h i s e q u a t i o n Al2S3 + NaHCO3 --> Al(OH)3 + Na2S + CO2 Al2S3 + 6NaHCO3 --> 2Al(OH)3 + 3Na2S + 6CO2

  16. B a l a n c e t h i s e q u a t i o n CuO + NH3 --> Cu + H2O + N 3 CuO + 2 NH3 --> 3 Cu + 3 H2O + N2

  17. B a l a n c e t h i s e q u a t i o n chlorine + magnesium iodide --> Cl2 + MgI2 --> MgCl2 + I2

  18. B a l a n c e t h i s e q u a t i o n F + NaOH --> NaF + O + H2O 2 F2 + 4 NaOH --> 4 NaF + O2 + 2 H2O

  19. B a l a n c e t h i s e q u a t i o n sodium chloride + sulfuric acid --> 2NaCl + H2SO4 --> 2HCl + Na2SO4

  20. B a l a n c e t h i s e q u a t i o n p o t a s s i u m n i t r a t e d e c o m p o s e s i n t o p o t a s s i u m n i t r i t e a n d o x y g e n 2KNO3 --> 2KNO2 + O2

  21. B a l a n c e t h i s e q u a t i o n bismuth nitrate + calcium iodide --> 2Bi(NO3)3 + 3CaI2 --> 2BiI3 + 3Ca(NO3)2

  22. B a l a n c e t h i s e q u a t i o n NH3 + O --> N2O4 + H2O 4NH3 + 7O2 --> 2N2O4 + 6H2O

  23. B a l a n c e t h i s e q u a t i o n i r o n ( I I I ) o x i d e r e a c t s w i t h c a r b o n m o n o x i d e t o p r o d u c e c a r b o n d i o x i d e a n d i r o n Fe2O3 + 3 CO --> 2 Fe + 3 CO2

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

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