Chemistry-Balancing Equations

posted by .

I need help balancing equations.

I don't know how to balance it because when i do it just won't work out ill have too much on one side and it just wouldn't work. i know im missing a rule or something.

  • Chemistry-Balancing Equations -

    Most of these just take a little practice. The more you practice the better you get. Here is what I do. First, I make sure to balance O2 LAST because since it is by itself I can put any number there I need.

    C7H60 + 02-> C02 + H20

    Start with C. I see 7 on the left so I know I must have a 7 for CO2.
    C7H6O + O2 ==> 7CO2 + H2O

    Now the H. There are 6 on the left so that means I must have 3H2O on the right.
    C7H6O + O2 ==> 7CO2 + 3H2O

    That balances C and H. Usually I check at this point to make sure they are ok. 7 C and 6 H on both sides. OK. Now, I count on the right to see how many O atoms I MUST have on the left. I see 17 O atoms (7*2=14 from CO2 and 3 from 3H2O = 17 total) on the right so I MUST have 17 on the left. There is 1 O in C7H6O which leaves 16 more on the left I must add. So, I place an 8 for O2.
    C7H6O + 8O2 ==> 7CO2 + 3H2O

    Now I check it to make sure I didn't goof somewhere. 7 C on the left and 7 on right.
    6H left and right.
    17 O left and 14+3 = 17 on right.
    Everything ship shape.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    Please, will someone help me balance this equation?
  2. Chemistry

    COMPLETION AND BALANCING OF EQUATIONS Complete and balance the following equations: 1. ZnCl2 + AgNO3
  3. Chemistry

    COMPLETION AND BALANCING OF EQUATIONS Complete and balance the following equations: 1. ZnCl2 + AgNO3
  4. Chemistry

    Wow, ok, that helps a LOT!! I guess you can't very easily balance an equation that can never happen! :) Thanks a lot! Just to make things clear, wouldn't it have to be Mg3(PO4)2, from balancing the charges?
  5. chemistry

    Can some one please balance this equation for me Fe + O2---> Fe2O3. Fe + O2 ==> Fe2O3. Here is the way to balance these equations by inspection, meaning, by trial and error. Rule #1. You may not change any subscripts. Equations …
  6. chem- balancing equations

    May i pls have some help balancing this equation Al + NH4ClO4 ---> Al2O3 + AlCl3 + NO + H20 Thanks, manny
  7. Chemistry+balancing equation tips

    We are on combustion reaction at the moment in chemistry, and I have to say, these reactions are like extremely hard to balance(well, just alot of erasing). It takes me a while to balance combustion reactions and I want to know if …
  8. CHemistry

    Redox equations are often long and difficult to balance by inspection. Luckily, electron transfers and oxidation numbers provide hints for balancing such equations. Balance the following equation: K2CrO4 + Na2SO3 + HCl ---> KCl …
  9. chemistry- redox

    Complete and balance the following equations using the method of half-reaction. both reactions happen in acidic solutions: a. Cu(s) + NO3-(aq)--> Cu2+(aq) + NO2(aq) b. Mn2+(aQ) + NaBiO3(s)--> Bi3+(aq) + MnO4-(aq) I'm having trouble …
  10. Chemistry

    Balancing chemistry equations and need help! Thank You!?

More Similar Questions