Question

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Answer 1

Answer:

Answered

Explanation:

2PbO2-----》 2PbO + O2

2. Zn + 2 NaOH ---》Na2ZnO2 + H2

3. 2Al + 3H2SO4 ---》 Al2 (SO4)3 + 3H2

4. 2 NaHCO3 + H2SO4---》 Na2SO4 + 2H2O + CO2

5. Ca(OH)2 + 2NH4Cl --》 CaCl2 + 2H2O + 2NH3

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Answer 2

Explanation:

(ii) Zn + 2NaoH = Na2ZnO2 + H2

(iii) 2Al + 3H2So4 = Al2(So4)3 + 3H2

(iv) 2NaHCo3+H2so4=Na2so4 + 2H2O + 2CO2