Chemistry Review 4th Six Weeks test

1. Write the formulas for the following acids: a) Hydrochloric Acid: HCl b) Sulfuric Acid: H,,2,,SO,,4,, c) Nitric Acid: HNO,,3,, d) Phosphoric Acid: H,,3,,PO,,4,,

2. What are the characteristics of a combustion reaction? Ca(cannot be zero)H(cannot be zero)OC(can be zero) + O,,2,, -> CO,,2,, + H,,2,,O

3. What are the characteristics of an acid-base reaction? (acid) something that starts w/ H + (base) something that ends in OH -> H,,2,,O + salt compound w/ a metal & non-metal HCl + Ca(OH),,2,, -> H,,2,,O + CaCl,,2,,

4. What are the characteristics of a decomposition reaction?

5. What are the characteristics of a precipitation reaction? (aq) + (aq) -> (aq) + (s)

6. What are the characteristics of an oxidation reduction reaction? metal no charge -> metal w/ charge Zn + HCl -> ZnCl,,2,, + H,,2,,

7. Given the equation N,,2,, + 3H,,2,, -> 2NH,,3,, what is the N,2,, to H,,2,, mole ratio? 1 mole N,,2,, = 1 ____________ __ 3 mol H,,2,, = 3

8. Answer the following question for this equation. 8 H,,2,, + S,,8,, -> 8H,,2,,S a) What is the mole ratio for Sulfer to Hydrogen? 8/1  b) If 3.00 moles of H,,2,, were used and an excess of Sulfer was present how many moles of H,,2,,S would you produce? 3.00 moles want moles c) If 3.00 grams of H,,2,, were used and an excess of Sulfer was present how many grams of H,,2,,S would you produce?3.00 moles H,,2,, * 8