curious carl and his lab partner need 100 ml of a 0.10 m cuso₄ solution for lab. unfortunately, all they…

curious carl and his lab partner need 100 ml of a 0.10 m cuso₄ solution for lab. unfortunately, all they have is 1 liter of a 0.50 m cuso₄ stock solution. cheryl, his lab partner knows what to do. she begins diluting the stock solution with distilled water. how much 0.50 m stock solution is required to make 100 ml of a 0.10 m solution? a 5.0 ml b 10.0 ml c 20.0 ml d 50.0 ml

curious carl and his lab partner need 100 ml of a 0.10 m cuso₄ solution for lab. unfortunately, all they have is 1 liter of a 0.50 m cuso₄ stock solution. cheryl, his lab partner knows what to do. she begins diluting the stock solution with distilled water. how much 0.50 m stock solution is required to make 100 ml of a 0.10 m solution? a 5.0 ml b 10.0 ml c 20.0 ml d 50.0 ml

Answer

Explanation:

Step1: Use dilution formula

$M_1V_1 = M_2V_2$, where $M_1$ is the initial - concentration, $V_1$ is the initial - volume, $M_2$ is the final - concentration, and $V_2$ is the final - volume.

Step2: Identify given values

$M_1 = 0.50\ M$, $M_2 = 0.10\ M$, $V_2=100\ ml$.

Step3: Solve for $V_1$

$V_1=\frac{M_2V_2}{M_1}=\frac{0.10\ M\times100\ ml}{0.50\ M}$ $V_1 = 20\ ml$

Answer:

C. 20.0 ml