Balance the following chemical equations. S_8 + O_2 rightarrow SO_3 C_6H_12O_6 +

Question

Balance the following chemical equations. S_8 + O_2 rightarrow SO_3 C_6H_12O_6 + O_2 rightarrow CO_2 + H_2O H_3PO_4 rightarrow H_4P_2O_7 + H_2O Na_2CO_3 + HCl rightarrow NaCl + H_2O + CO_2 Al(OH)_3 + H_2SO_4 rightarrow Al_2(SO_4)_3 + H_2O Al + Fe_3O_4 rightarrow Al_2O_3 + Fe Al + Fe_3O_4 rightarrow Al_2O_3 + Fe ZnS + HCl rightarrow ZnCl_2 H_2 Write the equations for numbers 4, 5, and 6 in word format. For example, 2 H_2O rightarrow 2 written as 2 moles of water yields 2 moles of hydrogen and 1 mole of oxygen. Find the empirical formula. 52.7% potassium and 47.3% chlorine

Explanation / Answer

1. 1 S8 + 12O2 ----> 8 SO3

2. 1 C6H12O6 + 6 O2 ---> 6CO2 + 6H2O

3. 2 H3PO4 ---> 1 H4P2O7 + 1 H2O

4. 1 Na2CO3 + 2 HCl ---> 2 NaCl + 1 CO2 + 1H2O

5. 2Al(OH)3 + 3 H2SO4 --->1 Al2(SO4)3 + 6 H2O

6. 8 Al + 3 Fe3O4 --> 4 Al2O3 + 9 Fe

7. 1 ZnS + 2HCl --> 1 ZnCl2 + 1 H2S

11. K --> 52.7% (Mass percent) ---> Mol ratio = 52.7/39 = 1.35

Cl ---> 47.3% (Mass percent) ---> Mol ratio = 47.3/35.5 = 1.33

Hence, the K:Cl (mol ratio) = 1.35 : 1.33 ~1:1 so, empirical value KCl.

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