How do i Balance the following Chemical Equations:

Question

NH3 O2 --> N2 H2O

MgO SO2 --> MgSO4 MgS

Fluorine Sodium Hydroxide --> Sodium Fluoride Water Oxygen

Answer 1

i will tell you a very good method to balance, in case you are very confused, especially in tests.

Make a table, two main columns- 1 for reactants and 1 for products

In each column divide the columns and label them with the elements. Write in the number of atoms of the element accordingly. Now you will see some relationships. Try experimenting with the molar values and you will finally get the answer. Nevertheless, here are the answers:

4NH3(g) + 3O2(g) --> 2N2(g) + 6H2O(l)

4MgO(s) + 4SO2(g) --> 3MgSO4(s) + MgS(s)

2F2(g) + 4NaOH(aq) --> 4NaF(aq) + 2H2O(l) + O2(g)

Answer 2

4NH3(g) + 3O2(g) --> 2N2(g) + 6H2O(l)

4MgO(s) + 4SO2(g) --> 3MgSO4(s) + MgS(s)

2F2(g) +  4NaOH(aq) --> 4NaF(aq) + 2H2O(l) + O2(g)

Here are some tutorials on balancing chemical equations.

http://www.mpcfaculty.net/mark_bishop/ba...

http://www.chemistry.ohio-state.edu/beth...

http://dbhs.wvusd.k12.ca.us/webdocs/Equa...

Answer 3

4NH3 + 3O2 --> 2N2 + 6H2O

Working on the next two.

Answer 4

The fool proof method is to balance the equation element by element.

First equation:

Nitrogen:

2 moles of NH3 would provide nitrogen for 1 mole of N2

Oxygen:

1 mole of O2 would provide oxygen for 2 moles of H2O

Hydrogen:

2 moles of NH3 will provide hydrogen for 3 moles of H2O

It is customary to balance the equations using whole numbers, and from the above 2 moles of NH3 would require 1.5 moles of O2, 3 moles of NH3 would result in 1.5 moles of N2.  4 moles of NH3 would balance with 6 moles of H2O, which in turn would balance with 3 moles of O2.

(4) NH3 + (3) O2  yields  (2) N2 + (6) H2O

Same process works for any reaction