1. To Do… Electronic homework Lectures Discussion Section
Chapter 9 (Part 1): Friday, March 2
Lectures
Chapters 9, 13.10, and 15.6 & 15.7.
Discussion Section
Turn in Chapter 9 homework.
Turn in lab write-up.

2. Solids, Solutions, and Gases
NaHCO3(s) + HC2H3O2(aq) → NaC2H3O2 (aq) + H2O(l) + CO2(g)
Which balloon will be the biggest?
Trial #
Mass of NaHCO3
Volume of M HC2H3O2 1
3.30 g
150.0 mL 2
5.70 g 3
10.5 g 4
21.0 g 5
31.8 g

3. Solids, Solutions, and Gases
NaHCO3(s) + HC2H3O2(aq) → NaC2H3O2 (aq) + H2O(l) + CO2(g)
Determine the volumes of the balloons.
Trial #
NaHCO3
HC2H3O2 1
mol
0.125 mol 2
mol 3 4
0.250 mol 5
0.379 mol

4. Solids, Solutions, and Gases
NaHCO3(s) + HC2H3O2(aq) → NaC2H3O2 (aq) + H2O(l) + CO2(g)
Determine the mass of left-over sodium bicarbonate in Trial #5.
Trial #
NaHCO3
HC2H3O2 1
mol
0.125 mol 2
mol 3 4
0.250 mol 5
0.379 mol

5. Solids, Solutions, and Gases
NaHCO3(s) + HC2H3O2(aq) → NaC2H3O2 (aq) + H2O(l) + CO2(g)
Determine the concentration of left-over acetic acid in Trial #1.
Trial #
NaHCO3
HC2H3O2 1
mol
0.125 mol 2
mol 3 4
0.250 mol 5
0.379 mol

6. Clicker Question N2(g) + 3H2(g) → 2NH3(g)
Which of the following reaction mixtures would produce the greatest amount of product, assuming all went to completion? Each involves the reaction symbolized by the equation:
N2(g) + 3H2(g) → 2NH3(g)
A) 3 moles of N2 and 3 moles of H2
B) 1 mole of N2 and 6 moles of H2
C) 1 mole of N2 and 3 moles of H2
D) Each would produce the same amount of product.
2 mol NH3

7. Starting with Mass…
If you have 48.0 g of oxygen gas and all the hydrogen gas you need, what mass of water is produced?
2H2 + O2 → 2H2O

8. Starting With Masses
You react 84 g of N2(g) with 22 g H2(g) to produce ammonia [NH3(g)].
Determine the mass of ammonia produced.
Determine the mass of left-over reactant.