CHEM 1110 Lecture Notes - Lecture 8: Salt Metathesis Reaction, Chemical Change

• School: Ohio State University
• Department: Chemistry
• Course: CHEM 1110
• Professor: Ross Dalbey

Document Summary

Classify the reaction type (combination, decomposition, single-replacement, double- replacement) Write a qualitative description of the reaction, including phases (formulas of reactants to the left of the arrow, formulas of products to the right of the arrow) Balance the equation by changing the coefficients (never the subscripts) Combination (synthesis) reaction: two or more reactants (a and b) combine to form a single product (ab) Decomposition reaction: single reactant (ab) breaks down into two or more products (a and b) Reversible reaction: chemical change that can go in either direction. 2h2(g) + o2(g) > 2h2o (g) + energy. 2h2o + energy > 2h2(g) + o2(g) Single-replacement reaction: one element (a) replaces another element (b) in a compound (bc) to form an element (b) and a new compound (ac) Double-replacement reaction: positive ion (a) from one compound (ac) combines with the negative ion (d) from another compound (bd) to form two new compounds (ad and bc)