balance the equation
Answers
Answer:
1.
S8 + 12 O2 → 8 SO3
This is an oxidation-reduction (redox) reaction:
8 S0 - 48 e- → 8 SVI
8 S0 - 48 e- → 8 SVI(oxidation)
8 S0 - 48 e- → 8 SVI(oxidation)24 O0 + 48 e- → 24 O-II
8 S0 - 48 e- → 8 SVI(oxidation)24 O0 + 48 e- → 24 O-II(reduction)
8 S0 - 48 e- → 8 SVI(oxidation)24 O0 + 48 e- → 24 O-II(reduction)S8 is a reducing agent, O2 is an oxidizing agent
2.
Reactants
ReactantsAl = 3
ReactantsAl = 3Br = 3
ReactantsAl = 3Br = 3K = 2
ReactantsAl = 3Br = 3K = 2S = 1
ReactantsAl = 3Br = 3K = 2S = 1O = 4
ReactantsAl = 3Br = 3K = 2S = 1O = 4Products
ReactantsAl = 3Br = 3K = 2S = 1O = 4ProductsAl = 2
ReactantsAl = 3Br = 3K = 2S = 1O = 4ProductsAl = 2Br = 1
ReactantsAl = 3Br = 3K = 2S = 1O = 4ProductsAl = 2Br = 1K = 1
ReactantsAl = 3Br = 3K = 2S = 1O = 4ProductsAl = 2Br = 1K = 1S = 3
ReactantsAl = 3Br = 3K = 2S = 1O = 4ProductsAl = 2Br = 1K = 1S = 3O = 12
Remember all atoms within the brackets get multiplied by the number outwith them.
Step 1
Put a 6 before KBr
Put a 6 before KBrAlBr3+K2SO4→6KBr+kAl2(SO4)3
Step 2
Put a 2 before
Put a 2 before AlBr3
2AlBr3+K2SO4→6KBr+Al2(SO4)3
Step 3
Put a 3 before
Put a 3 before K2SO4
This balances the Potassium, Sulphur and Oxyen
2AlBr3+3K2SO4→6KBr+Al2(SO4)3
Now check the reactants and products:
Reactants
ReactantsAl - 2
ReactantsAl - 2Br - 6
ReactantsAl - 2Br - 6K - 6
ReactantsAl - 2Br - 6K - 6S - 3
ReactantsAl - 2Br - 6K - 6S - 3O - 12
ReactantsAl - 2Br - 6K - 6S - 3O - 12Products
ReactantsAl - 2Br - 6K - 6S - 3O - 12ProductsAl - 2
ReactantsAl - 2Br - 6K - 6S - 3O - 12ProductsAl - 2Br - 6
ReactantsAl - 2Br - 6K - 6S - 3O - 12ProductsAl - 2Br - 6K - 6
ReactantsAl - 2Br - 6K - 6S - 3O - 12ProductsAl - 2Br - 6K - 6S - 3
ReactantsAl - 2Br - 6K - 6S - 3O - 12ProductsAl - 2Br - 6K - 6S - 3O - 12
3 .
There will be 10 oxygens on the products side and 2 on the reactants so to balance these out, we multiply the 02 on the reactants side by 5. The final equation will be C3H8 + 502 ----> 3CO2 + 4H20.
Sorry, that 2nd answer is too long..cause it was helped by my sister as she also have..so hope it helps you...
Take care...