Calculating Molar Concentration of Diluted HCl Solution

  • Thread starter fish
  • Start date
In summary, the molar concentration of the diluted hydrochloric acid is 0.60 M. This was determined by using the formula c1v1=c2v2, where c1 and v1 represent the initial concentration and volume, and c2 and v2 represent the final concentration and volume. The total volume of the solution is 500 mL and the initial concentration is 12 M. Therefore, the final concentration is 0.60 M. The answer given in the book may be incorrect, as it does not match the calculated value.
  • #1
fish
49
0
If 25 mL of 12 M HCl are added to 475 mL of distilled water, what is the molar concentration of the diluted hydrochloric acid?

c1v1=c2v2
25*12=475c
c=.63 M HCL

book has the answer as .60 M HCL
Isn't the answer .63?
 
Chemistry news on Phys.org
  • #2
"25*12=475c"

Think about this a moment; you've asserted something different from the problem statement, "25 mL of 12 M HCl are added to 475 mL ---."
 
  • #3
Your total volume is 500ml, and you have 12 moles. 12moles/.500L is?
 
  • #4
this seems to work, .30 mol/.500L = .60 M
 
  • #5
Originally posted by GeneralChemTutor
Your total volume is 500ml, and you have 12 moles. 12moles/.500L is?

No u have 12/40=0.3 moles
and now volume is 500mL

therefore molarity= 0.3*2=0.60

it is right way fish
 

1. What is molar concentration?

Molar concentration, also known as molarity, is a measure of the concentration of a substance in a solution. It is the number of moles of a solute dissolved in one liter of solution.

2. How is molar concentration calculated?

Molar concentration is calculated by dividing the number of moles of solute by the volume of the solution in liters. The formula is: M = moles of solute / volume of solution (in liters).

3. What is the unit for molar concentration?

The unit for molar concentration is moles per liter (mol/L) or sometimes written as M, which stands for molarity.

4. How is molar concentration used in experiments?

Molar concentration is used to determine the amount of solute needed to make a specific solution, as well as to measure the concentration of a substance in a solution. It is also used in various calculations, such as determining reaction rates and stoichiometry.

5. How does molar concentration differ from molality?

Molar concentration is a measure of the concentration of a solute in a solution based on the volume of the solution, while molality is a measure of the concentration based on the mass of the solvent. Molar concentration is dependent on temperature and pressure, while molality is not. Additionally, molar concentration is more commonly used in chemistry, while molality is used in certain applications, such as in colligative properties.

Similar threads

Replies
5
Views
4K
  • Chemistry
Replies
1
Views
1K
Replies
6
Views
1K
  • Biology and Chemistry Homework Help
Replies
3
Views
1K
Replies
1
Views
853
Replies
4
Views
12K
Replies
16
Views
2K
Replies
4
Views
4K
Replies
2
Views
2K
Back
Top