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