Question
A student takes a measured volume of 3.00 M HCl to prepare a 50.0 mL sample of 1.80 M HCl. What volume of 3.00 M HCl did the student use to make the sample? Use M_(j)V_(i)=M_(f)V_(f) 3.70 mL 16.7 mL 30.0 mL 83.3 mL
Answer
4.7
(393 Votes)
Tabitha
Expert · Tutor for 3 years
Answer
### 30.0 mL
Explanation
## Step 1: Identify the Problem Type### The problem involves the dilution of a solution. The formula for dilution is given by
, where
is the initial molarity,
is the initial volume,
is the final molarity, and
is the final volume.## Step 2: Assign Given Values### In this problem, we are given
(3.00 M),
(1.80 M), and
(50.0 mL), and we are asked to find
.## Step 3: Substitute Values into the Formula### Substitute the given values into the formula to find
: