CHEM 1510 SI Alyssa - Week 13 Session 2 Worksheet
1. What volume of 0.260 M sodium phosphate is needed to react completely with
0.300 L of 0.175 M calcium chloride?
2. What is the molarity of aluminum ion in a solution that contains 1.25 mol of
aluminum sulfate in 875 mL?
3. Use oxidation numbers to decide which, if any, of the following equations represents
a redox reaction:
a.
b.
c.
4. A chemical engineer dilutes a stock solution of sulfuric acid by adding 25.0 m3 of 7.5
M acid to enough water to make 500 m3. What is the concentration of sulfuric acid in
the diluted solution in g/mL?
5. Write the resonance structures for H3CNO2 (H atoms are bonded to the C, C atom
bonded to N, N atom bonded to both O atoms).
6. Write the resonance structures for SCN- (C is central atom).
7. Write a Lewis structure with minimal formal charges for:
a. POCl3
b. ClO2
c. SClF5
d. BeH2
e. I3-
f.
XeO3