Pre-Lab Assignment 1. Predict the products (if any) and write the balanced chemi

Question

Pre-Lab Assignment 1. Predict the products (if any) and write the balanced chemical equation (includes all species), the complete ionic equation (includes all ions), and the net ionic equation (omitting species that appear on both sides of the complete ionic equation) for each of the following: (a) (b) (c) Pb(NO3)2 (aq) + NaI (aq) H2SO4 (aq) + NaOH (aq) Adding solid silver nitrate to aqueous hydrochloric acid yields... 2. A sample solution is given to you that may contain any or all of the following ions: Ag Ba2+, and Mn2. In an attempt to determine which cation(s) are present, you add the following solutions. You found that no precipitate formed when either an aqueous solution of NaCl or of Na2SO4 was added to the sample solution. However, a precipitate did form when you treated the sample with a basic solution of Na2CO3. Which cation or cations are present in the sample? Give your reasoning. (Hint: see Table 4.1 of Zumdahl and Zumdahl). Balance the following redox reactions using the half-reaction method. Identify the oxidizing and reducing agents, and the substances oxidized and reduced. (See: Section 18.1 of your Zumdahl and Zumdahl textbook). 3. (a) (b) Cr(OH)3 (s) + MnO42-(aq) CrO42. (aq) + MnO2 (s) in basic solution IOS (aq) + Mn2+ (aq) 12 (s) + MnO4-(aq) in acidic solution Prepare data tables in your lab notebook similar to the ones found in the hand in sheets for this experiment. These tables will be used to record data and observations throughout the lab session. Remember, we don't require space for conclusions drawn in your notebook, just your observations. 4. 13

Explanation / Answer

(1)

(a)

Balanced equation is:

Pb(NO3)2(aq) + 2NaI(aq) ---> PbI2(s) + 2NaNO3(aq)

Complete ionic equation is:

Pb2+(aq) + 2NO3-(aq) + 2Na+(aq) + 2I-(aq) ---> PbI2(s) + 2NO3-(aq) + 2Na+(aq)

Net ionic equation is:

Pb2+(aq) + 2I-(aq) ---> PbI2(s)

(b)

Balanced equation is:

H2SO4(aq) + 2NaOH(aq) ---> Na2SO4(aq) + 2H2O(l)

Complete ionic equation is:

2H+(aq) + SO42-(aq) + 2Na+(aq) + 2OH-(aq) ---> 2H2O(l) + SO42-(aq) + 2Na+(aq)

Net ionic equation is:

2H+(aq) + 2OH-(aq) ---> 2H2O(l)

(c)

Adding solid silver nitrate to aqueous HCl yields:

AgNO3(s) + HCl(aq) ---> AgCl(s) + HNO3(aq)

Complete ionic equation is:

Ag+(aq) + NO3-(aq) + H+(aq) + Cl-(aq)---> AgCl(s) + H+(aq) + NO3-(aq)

Net ionic equation is:

Ag+(aq) + Cl-(aq)---> AgCl(s)

Hope this helps !

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.