Using the list of chemical species:
- C6H12O6
• CH3OH
• H2SO4
• H2C2O4
• HCN
• NH3
• NaOH
• Sr(OH)2
• CaCl2
• NaCl

Answer the questions:
1. Which species should have neutral pH? Explain why.
2. Conductivity is measured in siemens (S), and the typical unit measured for solutions is S/cm.
The higher the value, the better the electrical conductivity. Which of the chemical species
from the manifest would you expect to have the highest conductivities?

Also using the data below, and the chemical species listed above, what is the suggested identity of each sample (list from 1-10):
Sample Conductivity
(S/cm)
pH Other characteristics
Tap water 7.5 x 10-5 6.52
Distilled water 2.7 x 10-6 5.54
1_____ 3.1 x 10-3 5.61 White crystalline solid
2____ 4.9 x 10-3 0.98 Dense, viscous liquid, turns paper black
3____ 3.8 x 10-6 5.73 Flammable, low viscosity liquid
4____ 2.9 x 10-3 13.21 White crystalline solid, solution is
slippery on skin
5____ 4.7 x 10-3 5.62 White crystalline solid
6_____ 4.6 x 10-4 8.27 Sharp odour, white crystalline solid
7_____ 7.6 x 10-4 2.91 Flammable, white crystalline solid
8_____ 4.3 x 10-5 5.70 Flammable, white powdery solid
9_____ 3.8 x 10-4 4.06 Flammable, low viscosity liquid
10_____ 5.2 x 10-3 13.48 White crystalline solid, solution is
slippery on skin