Balancing Equations?

Question

Is there an easier method to Balance chemical eqns instead of using the trial and error method?

Answer 1

Of course! Using algebra can get you an answer much faster than trial and error for the more difficult equations.



The basic idea is to place a variable in front of each compound or element in the equation. One variable can arbitrarily be assigned a value of 1.



Then work out the equations for each element using the other variables, and solve the equations. For example, for a simple reaction for water, use the variables x, y, and z (the letters chosen don't matter):



x H2 + y O2 --> z H2O



For Hydrogen, you get the equation 2x = 2z

For Oxygen, you get the equation 2y = z



You can pick any variable to assign a value of 1. Let's pick x. If x=1, 2=2z, so z=1.

If z=1, then 2y=1, so y=1/2.



With values for your variables, you can plug them back into the equation to get



1 H2 + 1/2 O2 --> 1 H2O



This equation is correct, however, most of the time chemical equations are written out using whole numbers. Since this involves fractions, you'll want to multiply all of the coefficients (in this case by 2). This will give you:



2 H2 + O2 --> 2 H2O



More examples can probably be found on the web looking for the algebraic method to solve chemical equations.

Answer 2

yes thier is a easy way

like me wko study chemistry

just like

H2O->H2+O2

to balance it start w/ the #2 & above and multiply it in the co-eficient

final result, the balance equation of the water is



2H2O->2H2+O2

Answer 3

Ya their was alot of methods

Try the following link

www.iupac.com