How many grams of KCl are there in 10 mL of 20% solution.

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
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For this question it’s telling me use KCI which stands for potassium chloride so do I use KCl, (1 atom X 39.0983 Potassium) + (1 atom X 35.453 Chlorine) = (74.5513 g/mol) and use that with 10 ML of 20% Solution. I’ve been stuck on figuring out what I could do for this question. I want a long clarification and steps on it so it could help me know if I’m correct as I’m doing this question on my notebook.
**Calculating the Mass of KCl in a Solution**

**Question:**
How many grams of KCl are there in 10 mL of 20% solution?

**Explanation:**
To determine the mass of potassium chloride (KCl) in a solution, we need to understand the concept of percentage concentration. A 20% KCl solution means that there are 20 grams of KCl in every 100 mL of solution.

**Step-by-Step Calculation:**
1. Given: 
   - Percentage concentration (C) = 20%
   - Volume of solution (V) = 10 mL

2. Understand the percentage:
   - 20% solution means 20 grams of KCl in 100 mL of solution.

3. Use the percentage concentration to setup a proportion:
   - If 100 mL solution contains 20 grams of KCl,
   - Then 10 mL solution will contain \( \frac{10 \times 20}{100} \) grams of KCl.

4. Simplify the calculation:
   - \( \frac{10 \times 20}{100} = 2 \) grams

**Conclusion:**
There are 2 grams of KCl in 10 mL of a 20% KCl solution.

**Visual Aid Description:**
The provided text does not contain any graphs or diagrams associated with the question. The main content is text-based and involves a straightforward calculation related to percentage concentration of a solution.
Transcribed Image Text:**Calculating the Mass of KCl in a Solution** **Question:** How many grams of KCl are there in 10 mL of 20% solution? **Explanation:** To determine the mass of potassium chloride (KCl) in a solution, we need to understand the concept of percentage concentration. A 20% KCl solution means that there are 20 grams of KCl in every 100 mL of solution. **Step-by-Step Calculation:** 1. Given: - Percentage concentration (C) = 20% - Volume of solution (V) = 10 mL 2. Understand the percentage: - 20% solution means 20 grams of KCl in 100 mL of solution. 3. Use the percentage concentration to setup a proportion: - If 100 mL solution contains 20 grams of KCl, - Then 10 mL solution will contain \( \frac{10 \times 20}{100} \) grams of KCl. 4. Simplify the calculation: - \( \frac{10 \times 20}{100} = 2 \) grams **Conclusion:** There are 2 grams of KCl in 10 mL of a 20% KCl solution. **Visual Aid Description:** The provided text does not contain any graphs or diagrams associated with the question. The main content is text-based and involves a straightforward calculation related to percentage concentration of a solution.
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