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1) How many milliliters of a 0.450 M LiI solution contain 0.600 moles of LiI?

A. 885 mL
B. 750 mL
C. 326 mL
D. 1330 mL
E. 543 mL


Sagot :

To determine how many milliliters of a 0.450 M LiI solution are needed to contain 0.600 moles of LiI, follow these steps for a detailed solution:

1. Understand the relationship between molarity, moles, and volume:
- Molarity (M) is the concentration of a solution and is defined as the number of moles of solute per liter of solution.
- The formula to relate these quantities is:
[tex]\[ \text{Molarity (M)} = \frac{\text{moles of solute}}{\text{liters of solution}} \][/tex]

2. Rearrange the formula to solve for the volume of the solution in liters:
[tex]\[ \text{Volume (L)} = \frac{\text{moles of solute}}{\text{Molarity (M)}} \][/tex]

3. Substitute the given values into the formula:
- Given:
- Molarity (M) = 0.450 M
- Moles of LiI = 0.600 moles
[tex]\[ \text{Volume (L)} = \frac{0.600 \text{ moles}}{0.450 \text{ M}} \][/tex]

4. Calculate the volume in liters:
[tex]\[ \text{Volume (L)} = \frac{0.600}{0.450} = 1.3333 \text{ liters} \][/tex]

5. Convert the volume from liters to milliliters:
- Since 1 liter is equal to 1000 milliliters,
[tex]\[ \text{Volume (mL)} = 1.3333 \text{ liters} \times 1000 \text{ mL/L} = 1333.3333 \text{ mL} \][/tex]

6. Round the final answer to match the given options:
- The closest option to 1333.3333 mL is 1330 mL.

Therefore, the answer is:
D) 1330 mL