CHEMISTRY QUESTIONS AND EXPLANATIONS.
»balance chemical equation using algebra method.
Q.balance the reaction: Al+O2 to give Al2O3 using the algebra method
assign variable for each element.
aAl+bO to produce cAl2O3.
Al:a=2c.
O:2b=3c
assume a is equal to 1.
c=a/2.we get that a =1.c=1/2.
2b=3c.we get that c=1/2.=3x1/2=3/2,therefore b=3/4.
find the lowest common multiple of each variable a b and c.the lowest common multiple is 4,each of the variable must multiplied by 4.
Look!.a=4x1=4.
b=(3/4)x4=3.
c=(1/2)x4=2.
substitute the values of a b c in the unbalanced equation.
4Al+3O2 to produce 2Al2O3.
this chemistry example its grade 10 book.so simply example.