Thank you for visiting Determine the molarity of a solution formed by dissolving 97 7 g of LiBr in enough water to yield 750 0 mL of solution A. This page is designed to guide you through key points and clear explanations related to the topic at hand. We aim to make your learning experience smooth, insightful, and informative. Dive in and discover the answers you're looking for!
Answer :
To determine the molarity of a solution formed by dissolving 97.7 g of LiBr in enough water to yield 750.0 mL of solution, follow these steps:
1. Understand the Concept of Molarity:
Molarity is defined as the number of moles of solute per liter of solution. It is expressed in moles per liter (M).
2. Identify the Given Information:
- Mass of the solute (LiBr): 97.7 grams
- Volume of the solution: 750.0 mL
3. Find the Molar Mass of LiBr:
Lithium Bromide (LiBr) has a molar mass of approximately 86.845 grams per mole. This value is obtained by adding the atomic masses of lithium (Li) and bromine (Br).
4. Convert Volume from Milliliters to Liters:
Since molarity is expressed in terms of liters, convert the given volume:
[tex]\[
750.0 \, \text{mL} = 0.750 \, \text{L}
\][/tex]
5. Calculate Moles of LiBr:
Use the molar mass to convert the mass of LiBr to moles:
[tex]\[
\text{Moles of LiBr} = \frac{\text{Mass of LiBr}}{\text{Molar Mass of LiBr}} = \frac{97.7 \, \text{g}}{86.845 \, \text{g/mol}} \approx 1.125 \, \text{moles}
\][/tex]
6. Determine the Molarity of the Solution:
Use the formula for molarity:
[tex]\[
\text{Molarity} = \frac{\text{Moles of LiBr}}{\text{Volume of Solution in Liters}} = \frac{1.125 \, \text{moles}}{0.750 \, \text{L}} \approx 1.50 \, \text{M}
\][/tex]
Therefore, the molarity of the solution is approximately 1.50 M. The correct answer is option A) 1.50 M.
1. Understand the Concept of Molarity:
Molarity is defined as the number of moles of solute per liter of solution. It is expressed in moles per liter (M).
2. Identify the Given Information:
- Mass of the solute (LiBr): 97.7 grams
- Volume of the solution: 750.0 mL
3. Find the Molar Mass of LiBr:
Lithium Bromide (LiBr) has a molar mass of approximately 86.845 grams per mole. This value is obtained by adding the atomic masses of lithium (Li) and bromine (Br).
4. Convert Volume from Milliliters to Liters:
Since molarity is expressed in terms of liters, convert the given volume:
[tex]\[
750.0 \, \text{mL} = 0.750 \, \text{L}
\][/tex]
5. Calculate Moles of LiBr:
Use the molar mass to convert the mass of LiBr to moles:
[tex]\[
\text{Moles of LiBr} = \frac{\text{Mass of LiBr}}{\text{Molar Mass of LiBr}} = \frac{97.7 \, \text{g}}{86.845 \, \text{g/mol}} \approx 1.125 \, \text{moles}
\][/tex]
6. Determine the Molarity of the Solution:
Use the formula for molarity:
[tex]\[
\text{Molarity} = \frac{\text{Moles of LiBr}}{\text{Volume of Solution in Liters}} = \frac{1.125 \, \text{moles}}{0.750 \, \text{L}} \approx 1.50 \, \text{M}
\][/tex]
Therefore, the molarity of the solution is approximately 1.50 M. The correct answer is option A) 1.50 M.
Thank you for reading the article Determine the molarity of a solution formed by dissolving 97 7 g of LiBr in enough water to yield 750 0 mL of solution A. We hope the information provided is useful and helps you understand this topic better. Feel free to explore more helpful content on our website!
- You are operating a recreational vessel less than 39 4 feet long on federally controlled waters Which of the following is a legal sound device
- Which step should a food worker complete to prevent cross contact when preparing and serving an allergen free meal A Clean and sanitize all surfaces
- For one month Siera calculated her hometown s average high temperature in degrees Fahrenheit She wants to convert that temperature from degrees Fahrenheit to degrees
Rewritten by : Jeany
