# Chemistry

What is the concentration of a solution prepared by diluting 25.0 mL of HCl 0.750 mol/L to a final volume of 500. mL?

1. 👍 0
2. 👎 0
3. 👁 160
asked by Kate
1. molarity = mols/L.
mols HCl = M x L
mols HCl = 0.750 M x 0.025 L = ??
Now M = mols/L= ??/0.500

1. 👍 0
2. 👎 0
posted by DrBob222
2. mols HCl = 0.750 M x 0.025 L = 0.0186 mol

M = 0.0186 mol/0.500 L = 0.0372

the answer is 0.0372 mol/l

1. 👍 0
2. 👎 0
posted by Kate
3. I don't know what you teacher prefers but I would not round the 0.750 x 0.0250 = 0.01875. Just leave that in the calculator and divide that number (whatever is in the calculator) by 0.500 and the answer is 0.0375. You are allowed three significant figures. Doing it as you did gives rounding errors. You can see what difference it makes.

1. 👍 0
2. 👎 0
posted by DrBob222
4. Thank you, I made the change. My professor is very precise, so I'm glad you noticed that!

1. 👍 0
2. 👎 0
posted by Kate

## Similar Questions

1. ### Chemistry

What is the concentration of a solution prepared by diluting 25.0 mL of HCL 0.750 mol/L to a final volume of 500.mL?

asked by April on April 30, 2008
2. ### Chemistry

What is the concentration of a solution made by diluting 95 mL of 6.0 M HCl to a final volume of 750 mL

asked by Tish on October 14, 2012
3. ### Chemistry

Calculate the pH of a solution prepared by diluting 0.0015L of a 0.100 mol/L nitric acid solution with 0.5L of water. *C1×V1=C2×V2 C2=0.3MOL/L Do we use this concentration to find the pH

asked by Fayza on January 11, 2015
4. ### chem 150

10. Calculate the concentration of a solution made by diluting 10.00 mL of 0.1104 M HCl to 25.00 mL, then taking 10.00 mL of that solution and diluting to 50.00 mL.

asked by Sam on October 18, 2015
5. ### Science

What volume of a 2.00 M HCL solution can be prepared by diluting 0.350L of 14.0 M HCl solution?

asked by Dana on December 5, 2016
6. ### chemistry

The pH of a solution prepared by mixing 45 mL of 0.183 M KOH and 65 mL of 0.145 M HCl is i solved it but my answer is wrong. the right one is 1.97. am i missing a step? moles of HCl left over = (moles of HCl) – ( moles of KOH)

asked by ben on November 23, 2010
7. ### chemistry

what is the final M solution prepared by diluting 5.0 mL of 6.0 M HCl to 60.0 mL

asked by Elizabeth on October 13, 2014
8. ### chemistry

Calculate the molarity of a solution prepared by diluting 200.0 mL of 4.0 M HCl to 500.0 mL of solution a. 1.1 M b. 1.6 M c. 2.7 M d. 10. M

asked by anonymous on December 11, 2011
9. ### Chemistry

A solution is prepared by diluting concentration HNO3 to 2.0 M,Calculate PH.

asked by Ethio on November 23, 2011
10. ### Chemistry

Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 70 mL of the concentrated HCl, adding it to water, and diluting to 0.500 L. Calculate the approximate molarity

asked by JUNDY on March 15, 2015

More Similar Questions