Question

A 250 ml solution is made with 0.50 moles of NaCl.what is the molarity of solution? pls give answer? with explanation​

Answer 1

Answer:

Answer = 2.00 M

Explanation:

Solution: In this case we are given ml, while the formula calls for L. We must change the ml to Liters as shown below:

250 ml 1 liter

x -------- = 0.25 liters

1000 ml

To avoid confusion, I will usually make the unit change right in the original question:

Example 2. A 250 ml 0.25 L solution is made with 0.50 moles of NaCl. What is the Molarity of the solution?

Now, solve the problem as you solved example 1.

# of moles of solute

Molarity = ----------------------

Liters of solution

Given: Number of moles of solute = 0.50 moles of NaCl

Liters of solution = 0.25 L of solution

0.50 moles of NaCl

Molarity = --------------------- = 2.0 M solution

0.25 L

Answer = 2.0 M solution of NaCl