Question

give 20 chemical equation and balance them out of the syllabus
of class 10

Answer 1

Hello there !!

20 balanced chemical equations are here !!

1. 2Mg+O2→2MgO
2. C+O2→CO2
3. 2H2+O2→2H2O
4. CaO+H2O→Ca(OH)2
5. H2+Cl2→2HCl
6. CaCO3→ CaO+CO2
7. 2Fe(OH)3→Fe2O3 + 3H2O
8. 2AgCl → 2Ag+Cl2
9. 2AgBr→2Ag+Br2
10. Zn+2Hcl→ZnCl2 + H2
11. Zn+CuSO4 → ZnSO4 + Cu
12. NaOH+HCl→NaCl+H2O
13. BaCl2+Na2SO4→BaSO4+2NaCl
14. NaCl+AgNo3→NaNO3+AgCl
15. CuSO4+H2S→CuS+H2SO4
16. 2KOH+CaCl2→ Ca(OH)2+2KCl
17. CH4+O2→CO2+2H2O+Heat
18. 2Pb(NO3)2→2PbO+4NO2+O2
19. C6H12O6+6O2 →6CO2+6H2O+ATP
20. 6CO2 + 6H2O → C6H12O6 + 6O2

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Thank you❤️✨✨

Answer 2

A chemical reaction formula is a symbolic expression of a chemical reaction in which a reactant and a product are represented by their respective chemical formulas.

To balance the chemical equation, it is necessary to add stoichiometric coefficients to the reactants and products. This is important because the chemical equation must follow the law of conservation of mass and the law of constant proportions. That is, the number of atoms of each element must be the same on the reactant side and the product side of the equation.

$2Mg+O2→2MgO\\C+O2→CO2\\2H2+O2→2H2O\\2AgCl → 2Ag+Cl2\\2AgBr→2Ag+Br2\\Zn+2Hcl→ZnCl2 + H2\\H2+Cl2→2HCl\\CaCO3→ CaO+CO2\\2Fe(OH)3→Fe2O3 + 3H2O\\Zn+CuSO4 → ZnSO4 + Cu\\NaOH+HCl→NaCl+H2O\\BaCl2+Na2SO4→BaSO4+2NaCl\\NaCl+AgNo3→NaNO3+AgCl\\CuSO4+H2S→CuS+H2SO4\\C6H12O6+6O2 →6CO2+6H2O+ATP\\6CO2 + 6H2O → C6H12O6 + 6O2\\2KOH+CaCl2→ Ca(OH)2+2KCl\\CH4+O2→CO2+2H2O+Heat\\2Pb(NO3)2→2PbO+4NO2+O2$

These are the 20 chemical equations.

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