Question

part 1) Write the full electron configuration for any five of the elements you studied, both of the atom and of the ion. Identify the valence electrons in each.

CaCl2, KCl, FeCl2, CuCl2, LiCl

Part 2)

Solution Conductivity (uS/cm) A - CaCl2 A- AICI: A - Naci B - HC2H302 B - HCI B - H3PO4 B - H3BO3 C-H2Odeionized C-H2Otap C-CH3OH C-C2H602 Gatorade 11648 15040 6670 480 20967 8157 88 33 465 33 155 3800

1. Based on your conductivity values, can you classify the solutions as those that contain molecular compounds, ionic compounds, or molecular acids?

2. Classify each as strong or weak electrolyte.

3. Arrange the molecular acids from the strongest to the weakest, based on conductivity values.

4. Would you expect them to partially dissociate, completely dissociate, or not dissociate at all?

5. Write an equation for the dissociation or ionization of each compound. Use → for strong; ⇌ for weak.

6. Why do the compounds of the same type, each with the same concentration (0.05 M), have such large differences in conductivity values?

7. For H₃PO₄ and H₃BO₃, does the subscript “3” of hydrogen in these two formulas seem to result in additional ions in solution? Explain.

WATER AND GATORADE:

1. How do you explain the relatively high conductivity of tap water compared to a low or zero conductivity for deionized water?

2. Is Gatorade a strong or weak electrolyte?

Answer 1

20 TDATE: PAGE No 1 (4) caclg Oc, ý an ionic compound which contain 2 valance electron of ca and 7 é of each chlorine kice is on ionic compound with I valence election corresponding to k and 7 e corresponding to chlonne (of Fece, ý a also ionic with a valence é of Fe and 7 é corresponding to each chlorine cuclg i also ionic with 2 Velence é correspon to cu and 7 election Corresponding to each ca. Lidl is an tonic Compound which contain se Corresponding to Li and 7 e corresponding to ce 211.) Molecular quid = H Cg H ₂ O (Ethanoic acid), He, H₂poy H₃ 803. Ionic compound - Calle Alcez , Nace Molecular Compound P-H₂O, tap H₂O, CH₂OH, C₂ HG Og Gatorade cally = Strong electolyte Alce = strong electrolyte Nace = Strong - Ethanoic acid = Non electrolyte in pare form and weak elecpolyte in solution He = strong acid (strong electolyte) H₂Poy a weak electrolyte H₂ BO weak electolyte pare watey = weak electrolyte Tap water = weak electolyte CH₂OH = Non electrolyte Cq Ho Og = Non-cleatolyte Gato rade = electrolyte in solution because it contain Na, K, reg ete in

20 TDATE: PAGE No 1 (4) caclg Oc, ý an ionic compound which contain 2 valance electron of ca and 7 é of each chlorine kice is on ionic compound with I valence election corresponding to k and 7 e corresponding to chlonne (of Fece, ý a also ionic with a valence é of Fe and 7 é corresponding to each chlorine cuclg i also ionic with 2 Velence é correspon to cu and 7 election Corresponding to each ca. Lidl is an tonic Compound which contain se Corresponding to Li and 7 e corresponding to ce 211.) Molecular quid = H Cg H ₂ O (Ethanoic acid), He, H₂poy H₃ 803. Ionic compound - Calle Alcez , Nace Molecular Compound P-H₂O, tap H₂O, CH₂OH, C₂ HG Og Gatorade cally = Strong electolyte Alce = strong electrolyte Nace = Strong - Ethanoic acid = Non electrolyte in pare form and weak elecpolyte in solution He = strong acid (strong electolyte) H₂Poy a weak electrolyte H₂ BO weak electolyte pare watey = weak electrolyte Tap water = weak electolyte CH₂OH = Non electrolyte Cq Ho Og = Non-cleatolyte Gato rade = electrolyte in solution because it contain Na, K, reg ete in