What mass of precipitate (in g) is formed when 45.5 mL of 0.300 M Na PO reacts with 62.5 mL of 0.200 M Cr(NO) in the following chemical reaction? Na₂PO₂(aq) + Cr(NO³)²(aq) → CrPO₂(s) + 3 NaNO₂(aq)
What mass of precipitate (in g) is formed when 45.5 mL of 0.300 M Na PO reacts with 62.5 mL of 0.200 M Cr(NO) in the following chemical reaction? Na₂PO₂(aq) + Cr(NO³)²(aq) → CrPO₂(s) + 3 NaNO₂(aq)
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:What mass of precipitate (in g) is formed when 45.5 mL of 0.300 M Na₃PO₄ reacts with 62.5 mL of 0.200 M Cr(NO₃)₃ in the following chemical reaction?
Na₃PO₄(aq) + Cr(NO₃)₃(aq) → CrPO₄(s) + 3 NaNO₃(aq)

Transcribed Image Text:**Problem Statement:**
What mass of precipitate (in grams) is formed when 20.5 mL of 0.800 M Co(NO₃)₂ reacts with 16.5 mL of 0.800 M NaOH in the following chemical reaction?
**Chemical Reaction:**
Co(NO₃)₂(aq) + 2 NaOH(aq) ⟶ Co(OH)₂(s) + 2 NaNO₃(aq)
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**Explanation:**
This problem involves a precipitation reaction where cobalt(II) nitrate reacts with sodium hydroxide to form cobalt(II) hydroxide as a solid precipitate and sodium nitrate in solution. To find the mass of the precipitate formed, follow these steps:
1. **Calculate Moles of Reactants:**
- **Co(NO₃)₂:** Use the formula \( \text{Moles} = \text{Volume (L)} \times \text{Molarity (M)} \).
- **NaOH:** Similarly, calculate using the same formula.
2. **Determine Limiting Reagent:**
- Compare the mole ratio from the balanced equation to find which reactant is the limiting reagent.
3. **Calculate Moles of Precipitate:**
- Based on the limiting reagent, use stoichiometry to find moles of Co(OH)₂ formed.
4. **Find Mass of Precipitate:**
- Convert moles of Co(OH)₂ to mass using its molar mass.
This process outlines how to solve for the mass of precipitate using stoichiometry and reactant quantities in a chemical reaction.
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