QuestionJuly 20, 2025

Experiment 1: Perform Qualitative Tests for the Group I Cations Part 1: Identify the Pb^2+ Ion 1. Take a clean test tube from the Containers shelf and place it on the workbench. 2. Take 0.2 M lead (II) nitrate from the Materials shelf and add 5 mL to the test tube. 3. Take 12 M hydrochloric acid from the Materials shelf and add 5 mL to the test tube. Is there a precipitate? If so what color is the precipitate? Record your observations Data Table 1. 4. Take a second test tube from the Containers shelf and place it on the workbench. 5. Decant the liquid from the first test tube by moving it onto the empty test tube. Select the Decant option from the window that appears. 6. Discard the second test tube of liquid by emptying it into the waste than placing in the sink.

Experiment 1: Perform Qualitative Tests for the Group I Cations Part 1: Identify the Pb^2+ Ion 1. Take a clean test tube from the Containers shelf and place it on the workbench. 2. Take 0.2 M lead (II) nitrate from the Materials shelf and add 5 mL to the test tube. 3. Take 12 M hydrochloric acid from the Materials shelf and add 5 mL to the test tube. Is there a precipitate? If so what color is the precipitate? Record your observations Data Table 1. 4. Take a second test tube from the Containers shelf and place it on the workbench. 5. Decant the liquid from the first test tube by moving it onto the empty test tube. Select the Decant option from the window that appears. 6. Discard the second test tube of liquid by emptying it into the waste than placing in the sink.
Experiment 1: Perform Qualitative Tests for the Group I Cations Part 1: Identify the Pb^2+ Ion 1. Take a clean test tube from the Containers shelf and place it on the workbench. 2. Take 0.2 M lead (II) nitrate from the Materials shelf and add 5 mL to the test tube. 3. Take 12 M hydrochloric acid from the Materials shelf and add 5 mL to the test tube. Is there a precipitate? If so what color is the precipitate? Record your observations Data Table 1. 4. Take a second test tube from the Containers shelf and place it on the workbench. 5. Decant the liquid from the first test tube by moving it onto the empty test tube. Select the Decant option from the window that appears. 6. Discard the second test tube of liquid by emptying it into the waste than placing in the sink.

Solution
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Answer

White precipitate of PbCl_2 is observed. Explanation 1. Add Lead (II) Nitrate Add 5 mL of 0.2 M lead (II) nitrate to a clean test tube. 2. Add Hydrochloric Acid Add 5 mL of 12 M hydrochloric acid to the test tube containing lead (II) nitrate. 3. Observe Precipitate Formation A white precipitate forms, indicating the presence of PbCl_2.

Explanation

1. Add Lead (II) Nitrate<br /> Add 5 mL of 0.2 M lead (II) nitrate to a clean test tube.<br />2. Add Hydrochloric Acid<br /> Add 5 mL of 12 M hydrochloric acid to the test tube containing lead (II) nitrate.<br />3. Observe Precipitate Formation<br /> A white precipitate forms, indicating the presence of $PbCl_2$.
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