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I'm still having some difficulty balancing equations that require more than just inspection. Is there another, possibly longer but more accurate method to balancing "harder" chemical reactions. For example: Cu + HNO3 → Cu(NO3)2 + NO + H2O
In order to make balancing chemical equations easier, I would try to start with the largest molecule and attempt to balance the elements in that molecule first. This helps me, but everyone has different strategies that works for them. I think practice is the best way to help.
It will be easier to see which element already has the largest amount on the reactant side and see the proportion of the same element on the product side. One by one, plug in the coefficients. If you have to, rewrite the new balanced equation and recheck your coefficients to see if both sides have same amounts.
With balancing equations, I normally pick a side and use it as a reference point and go down the list to check if the numbers match. If it is not easily apparent, messing around with the numbers and trying to plug in possible answers sometimes helps.
Jarrett Peyrefitte 1L wrote:Try to make a list of reactants and products with their respective number of molecules and balance it one by one.
Yes! This simple list helps with confusion and knowing how much of what is on each side. I highly recommend this. :)
First, separate the reactants and products to distinguish the total amount. By looking at the equation, it is clear that the coefficients will have to doubled since there is an uneven number of oxygens in the reactant and product category. In that case, count the total amount for each element to balance the equation with the appropriate coefficient.
Always balance the elements that stand alone VS. balancing the elements that have several others attached to them. For example, Li3N (s) + H2 (g) -> LiNH2 (s) + LiH (s) I would only work with balancing H2 and LiH. Li3N (s) + 2H2 (g) -> LiNH2 (s) + 2LiH (s).
Aminah Mahadi 2C wrote:I'm still having some difficulty balancing equations that require more than just inspection. Is there another, possibly longer but more accurate method to balancing "harder" chemical reactions. For example: Cu + HNO3 → Cu(NO3)2 + NO + H2O
All I know is you should start with the least frequently occurring elements in the reaction.
Not really. Sometimes you just gotta grind it out. If you dont already, you can try to balance polyatomic ions if they show up on both sides instead of breaking them up into individual elements.
I always start with what looks most complicated and leave elements that stand alone for last because when adding a coefficient to that element it will not change the amount for others and therefore is easier to change last because then you do not have to go back and add more coefficients to other elements, usually.
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