The Ionic Reactionalization

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Name: Kamaal Thomas |Date: January 4, 2011 | |Graded Assignment

Lab Report

Answer the questions below. When you have finished, submit this assignment to your teacher by the due date for full credit.

(8 points)

|Score |
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1. For Part 2: Single-Displacement Reactions: For each of the four single-displacement reactions, describe what happened in each well. If a chemical reaction occurred, write a balanced equation for it. Then using the A, B symbols, write a general equation for a single-displacement reaction.

Here are the chemical formulas of the reactants for each reaction:

• zinc – Zn
copper sulfate – CuSO4

In well 1A there was a chemical reaction which turned the zinc black, while the copper sulfate was still blue.

AX + B → A + BX

Zn + CuSO4 → ZnSO4 +Cu

• aluminum – Al
copper sulfate – CuSO4

In well 2A there was no reaction between the aluminum and copper sulfate. The aluminum floated and there was no change in color, gas released, or precipitates which identifies that there was no reaction.

AX + B → A + BX

NO REACTION

• zinc – Zn
silver nitrate – Ag(NO3)

In well 3A there was a reaction between the zinc and silver nitrate. The zinc turned black as well as the liquid silver nitrate which identifies that there was a chemical reaction taking place.

AX + B → A + BX

Zn + Ag(NO3) → Zn(NO3) + Ag

copper – Cu
silver nitrate – Ag(NO3)

In well 4 there was a reaction between the solid copper pieces and the solution silver nitrate. The copper rusted and changed to a dusty black-grayish color. This change in color identifies that a chemical reaction just took place.

AX + B → A + BX

Cu + Ag(NO3) → Cu(NO3) + Ag

(8 points)

|Score |
| |

2. For Part 3: Double-Displacement Reactions: For each of the double-displacement reactions, describe what happened in each well, including the colors of any products that formed. If a chemical reaction occurred, write a balanced equation for it. Then using the A, B symbols, write a general equation for a double-displacement reaction.

Here are the chemical formulas of the reactants for each reaction:

• sodium chloride – NaCl
copper sulfate – CuSO4

In well 1A there was no chemical reaction between the sodium chloride and copper sulfate. We know this because there was no color change, precipitate formation, or gas production in this mixture.

AX + BY → AY + BX

NO REACTION

• sodium hydroxide – NaOH
copper sulfate – CuSO4

In well 2A there was a chemical reaction between the sodium hydroxide and copper sulfate. There was a blue precipitate formation which proves there was a chemical reaction.

AX + BY → AY + BX

NaOH + CuSO4 → NaSO4 + CuOH

• sodium phosphate (trisodium phosphate) – Na3(PO4)
copper sulfate – CuSO4

In well 3A there was a chemical reaction between the sodium phosphate and copper sulfate. There was a light blue precipitate formation which proves there was a chemical reaction.

AX + BY → AY + BX

Na3(PO4) + CuSO4 → Na3SO4 + CuPO4

• sodium chloride – NaCl
silver nitrate – AgNO3

In well 4A there was a chemical reaction between the sodium chloride and silver nitrate. There was a white precipitate formation which proves there was a chemical reaction.

AX + BY → AY + BX

NaCl + AgNO3 → NaNO3 + AgCl

• sodium hydroxide – NaOH
silver nitrate – AgNO3

In well 5A there was a chemical reaction between the sodium hydroxide and silver nitrate. There was a brown precipitate formation which proves there was a chemical reaction.

AX + BY → AY + BX

NaOH + AgNO3 → NaNO3+ AgOH

• sodium phosphate (trisodium phosphate) – Na3(PO4)
silver nitrate – AgNO3...
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