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CHEM 101: Loncapa Post Lecture 14 / Pre Lecture 15 Questions And Answers With Verified Solutions Already Passed Latest Updated 2025 $13.99
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CHEM 101: Loncapa Post Lecture 14 / Pre Lecture 15 Questions And Answers With Verified Solutions Already Passed Latest Updated 2025

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CHEM 101: Loncapa Post Lecture 14 / Pre Lecture 15 Questions And Answers With Verified Solutions Already Passed Latest Updated 2025

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CHEM 101: Loncapa Post Lecture 14 /
Pre Lecture 15 Questions And Answers
With Verified Solutions Already Passed
Latest Updated 2025
1. When an ammonium chromate solution is mixed with a barium nitrate
solution, a precipitate forms. What is the name of the precipitate?
Answer: Barium chromate
Explanation: The precipitate formed is barium chromate (BaCrO₄), which is
insoluble in water.

2. Choose the correct, balanced molecular equation that represents this
reaction:
Answer: (NH₄)₂CrO₄ (aq) + Ba(NO₃)₂(aq) → BaCrO₄(s) + 2NH₄NO₃(aq)
Explanation: This equation shows ammonium chromate and barium nitrate
reacting to form barium chromate (solid) and ammonium nitrate in aqueous
solution.

3. Choose the correct, balanced complete ionic equation that represents the
reaction above:
Answer: 2NH₄⁺(aq) + CrO₄²⁻(aq) + Ba²⁺(aq) + 2NO₃⁻(aq) → 2NH₄⁺(aq) +
2NO₃⁻(aq) + BaCrO₄(s)
Explanation: This complete ionic equation shows all ions in the solution before
and after the reaction, including spectator ions (NH₄⁺ and NO₃⁻).

4. Choose the correct net ionic equation that represents the reaction above:
Answer: CrO₄²⁻(aq) + Ba²⁺(aq) → BaCrO₄(s)
Explanation: The net ionic equation only includes the ions that form the
precipitate, eliminating the spectator ions.

5. According to section 15.2, which of the following statements is false?
Answer: A saturated solution is one in which more solute can be dissolved.
Explanation: This statement is false because a saturated solution is one in which
no more solute can dissolve at a given temperature and pressure.

6. What is the concentration of a 2.5 L solution containing 1.3 mol NaCl?
Answer: 0.52 M

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