Lets fix the hydrogen on the right by changing the coefficient of the H 2 O to 8. Change coefficient in front of CO 2 to 10. This unbalances my right side again so I go back to that side and fix it. How do I do that? Change the coefficient of C 5 H 7 OH to 2. To simplify my problem all we have to do is make the oxygens an even number on the left side (reactants). The oxygens are an even number on the right side and an odd number on the left side. Then I would change the hydrogen on the right by putting a 4 in front of H 2 O. It is best to balance the carbons and hydrogen first in these kinds of reactions. Start to try to balance them with coefficients we are going to start with 5 in front of the CO 2 on the right side. Then we count up all the elements on each side of the equation and assume that all the coefficients are 1. VIDEO Balancing Chemical Equation Demonstrated Example 4 : Balance the chemical equation below.Ĭ 5 H 7 OH (l) + O 2(g) -> CO 2(g) + H 2 O (g)Īnswer: Same as before, first we write down the chemical equations on our paper and then we draw a line down the yield sign to separate the two halves of a chemical equation. 2 Al(OH) 3(aq) + 3 Li 2 CO 3(aq) -Īll the elements and polyatomic ions are the same on both sides so I am done.ĬOMPLETE ANSWER: 2 Al(OH) 3 (aq) + 3 Li 2 CO 3 (aq) -> 6 LiOH (aq) + Al 2 (CO 3 ) 3 (s) I will start with the Aluminum on the left side. Now start balancing the equation by adding coefficients. If the polyatomic ions appear the same on both sides of the chemical equation s, we can count the polyatomic ions as one whole instead of individual elements. However, in this case we have polyatimic ions. How do we start to balance a chemical equation?Īnswer: Same as before, first we write down the chemical equations on our paper and then we draw a line down the yield sign to separate the two halves of a chemical equation.
VIDEO Balancing Chemical Equation Demonstrated Example 3 : Balance the chemical equation below.Īl(OH) 3(aq) + Li 2 CO 3(aq) -> LiOH (aq) + Al 2 (CO 3 ) 3(s) In this section I will show you some tricks to make the these kinds of chemical equations much easier.
Those chemical equations usually include situations where you need to keep balancing until you get to high coefficient numbers or when you have lots of elements on both sides of the chemical equations. What are some of the tricks for balancing a chemical equation?įor the simple chemical equations in the previous section, the process is pretty straightforward, but there are some chemicals equations that many people have trouble balancing.
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