IDENTIFY THE TYPE OF CHEMICAL REACTION:
11. H2 + Cl2 → 2 HCl __________________________
12. 2H2O → H2 + O2 __________________________
13. CaO + SO3 → CaSO4 __________________________
14. Zn + CuSO4 → ZnSO4 + Cu __________________________
15. 2Al2O3 → 4Al + 3O2 __________________________
16. CuO + H2 → Cu + H2O __________________________
17. Zn + 2AgNO3 → Zn(NO3)2 + 2Ag ______________________
18. 2KClO3 → 2KCl + 3O2 ______________________
19. C2H4 + H2 → C2H6 ______________________
Answer:
11) it is a combination reaction As two elements combine to from a compound, it is an element – element combination.
12) 2H2O → 2H2O + O2
A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds.
13) This is an acid-base reaction (neutralization): CaO is a base, SO 3 is an acid.
14) displacement reaction. A displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound.
15) 4Al (s) + 3O2 (g) —–> 2Al2O3 (s) This is a combination reaction.
16) redox reactions are chemical reactions that involve the transfer of electrons between the reactants taking part in it. -Now, in the given reaction CuO + H2→Cu + H2O , copper which is in +2 oxidation state in cupric oxide gains 2 electrons and gets reduced to 0 state in copper atom.
17) It is a displacement reaction.
18) 2KClO3 – – -> 2KCl + 3O2 is a Decomposition reaction.
19) Combination reaction.
Answer:
11. Chemical Combination reaction
12. Chemical Decomposition reaction
13. Chemical Combination reaction
14. Chemical Displacement reaction
15. Chemical Decomposition reaction
16. Chemical Displacement reaction
17. Chemical Displacement reaction
18. Chemical Decomposition reaction
19. Chemical Combination reaction
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Chemicalcombination reaction:
The reactants combine to form the single product.
Chemical Decomposition reaction :
In a decomposition reaction, one reactant can form two or more products by the breakage of bonds.
Chemical Displacement reaction :
In a displacement reaction, one atom inside a compound is replaced by another atom to form the product or products.
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