1 / 8

Balancing Equations

Balancing Equations. Chemical Equations & Reactions. WARMUP. Decide whether the following equations are “balanced” or not. Na + MgF 2 2NaF + Mg Cu(NO 3 ) 2 + Na 2 CO 3 CuCO 3 + NaNO 3 P 4 O 10 (s) P 4 (s) + 5O 2 (g). Balancing Steps.

plorna
Download Presentation

Balancing Equations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Balancing Equations Chemical Equations & Reactions

  2. WARMUP • Decide whether the following equations are “balanced” or not. Na + MgF2 2NaF + Mg Cu(NO3)2 + Na2CO3 CuCO3 + NaNO3 P4O10 (s) P4 (s) + 5O2 (g)

  3. Balancing Steps • Write the unbalanced formula equation. • Countatoms on each side. • Add coefficients to make #s equal. • Coefficient  subscript = # of atoms 4. Reduce coefficients to lowest possible ratio, if necessary. 5. Double check atom balance!!!

  4. Helpful Tips • Balance one element at a time. • Updateall atom counts after adding a coefficient. • If an element appears more than once per side, balance it last. • Balance polyatomic ions as single units. • “1 SO4” instead of “1 S” and “4 O” • Balance H atoms and O atomsafter atoms of all other elements have been balanced.

  5. Practice • NH4NO3 + Ba3(PO4)2 Ba(NO3)2 + (NH4)3PO4

  6. Practice • Aluminum acetate and magnesium sulfate react to form aluminum sulfate and magnesium acetate.

  7. Al + CuCl2 Cu + AlCl3 Al Cu Cl Balancing Example Aluminum and copper(II) chloride react to form copper and aluminum chloride. 2 3 3 2 2  1 1 1 1 2 3  2  6 3  6   3

  8. Avoid Most Common Mistakes • writing incorrect chemical formulas for reactants or products • trying to balance an equation by changing subscripts

More Related