University:
Carleton College
Course:
CHEM 122 | Introduction to Chemistry
Academic year:

2022
Views:

363

Pages:

1
Author:

Clint W.

Chemical Reactions Quiz In class texting review questions/answers 1. A single replacement reaction will only happen if… The free element is MORE ACTIVE than the one in the compound 2. If aluminum goes from Al  Al3+ it is what? Oxidized (going from charge 03+ means a LOSS of electrons) remember OIL RIG 3. What is the defining characteristic of a decomposition reaction? One reactant breaking down into two or more products 4. Free metals have what state of matter and what charge? Solid state and 0 (neutral) charge 5. Na (s) + O2 (g)  4Na (s) + O2 (g)  2Na2O (s) 6. Make solid CaS Answers will vary, double replacement or single replacement reactions can be used 7. HCl (aq) + Na2CO3 (aq)  Notice right away that this is an acid base reaction! 2HCl (aq) + Na2CO3 (aq)  H2O (l) + CO2 (g) + 2NaCl (aq) 8. Mg (s) + KCl (aq)  NO REACTION! Magnesium is NOT more active than potassium! 9. What is the net ionic equation for BaCl2 (aq) + K2SO4 (aq)  BaCl2 (aq) + K2SO4 (aq)  BaSO4 (s) + 2KCl (aq) Ba2+ (aq) + 2Cl- (aq) + 2K+ (aq) + SO42- (aq)  BaSO4 (s) + 2K+ (aq) + 2Cl- (aq) Ba2+ (aq) + SO42- (aq)  BaSO4 (s) 10. What are the reactants in a combustion reaction? Hydrocarbon (something with hydrogen, carbon, and sometimes oxygen) AND O2 (g) 11. Name 2 types of reactions that would have H2O (l) as a product Acid/base neutralization reactions and combustion reactions 12. Write a balanced reaction for the decomposition of iron (III) oxide 2Fe2O3 (s)  4Fe (s) + O2 (g)