# Chemistry

Use the dilution relationship (Mi x Vi = Mf x Vf) to calculate the volume of 0.500 M NaOH needed to prepare 500 mL of .250 M NaOH.

This is my work

? L Solution = 500mL x (1L/1000mL) = .500L

? mol NaOH = .500 L Solution x (0.250 M NaOH/1 L Solution) = .125 mol NaOH

? L solution = .125 mol NaOH x (1L Solution/.500 mol NaOH) = .25

The problem then asks me to round my answer to the nearest ones place, so i have a feeling this equation has an error. Can anyone guide me to getting it right? Thanks!

1. 👍 1
2. 👎 0
3. 👁 1,446
1. Why did you shift to liters as the unit of volume. I would have used ml as the volume unit, I suspect that is what the problem intended (but did not say so).

1. 👍 0
2. 👎 0
👨‍🏫
bobpursley
2. Aren't you looking for the molarity in this equation. If so, the molarity equation is M = moles of solute / Liters of Solution

1. 👍 0
2. 👎 0
3. You didn't follow the instructions and I don't see that you used MxV= MxV
?? mL x 0.500 M = 500 mL x 0.250 M
?? mL = 500 x 0.250/0.500 = 250 mL.

1. 👍 0
2. 👎 0
4. No, you aren't looking for the molarity. You have molarity of solution 1 and you have molarity of solution 2. You are looking for volume (and you solved for that and obtained 0.250 L which is the same as 250 mL). So I would round my answer to 250 mL.

1. 👍 0
2. 👎 0
5. Alright, I see my error. I appreciate the help :)

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Chemistry

what volume, in L, of a 10.0M HCL solution is needed to make 2.00L of 2.00m HCL solution by dilution with water. Thank you

2. ### langue arts

Read the following sentence that contains informational text. Determine which type of word or phrase relationship is being used. The roads of New Orleans remained flooded due to the hurricane. (1 point) item/category relationship

3. ### Organic Chemistry

How am I supposed to do these questions? I'm completely lost. A 0.120 M solution of an enantiomerically pure chiral compound D has an observed rotation of 0.12° in a 1-dm sample container. The molar mass of the compound is 130.0

4. ### English

Read the following sentence that contains informational text. Determine which type of word or phrase relationship is being used. The roads of New Orleans remained flooded due to the hurricane. (1 point) cause/effect relationship

1. ### Chemistry

7.0 ml of 6.0 M NaOH are diluted with water to a volume of 400 ml. You are asked to find the molarity of the resulting solution. The total number of moles of NaOH is not changed on dilution. Calulate the molarity. Work:

2. ### Organic Chemistry

A 0.160 M solution of an enantiomerically pure chiral compound D has an observed rotation of 0.20° in a 1-dm sample container. The molar mass of the compound is 128.0 g/mol. (a) What is the specific rotation of D? (b) What is the

3. ### English

Briefly explain Anne’s relationship with her parents. How is her relationship with her father different from her relationship with her mother? What does each relationship tell you about Anne, her values, and her needs? (the book

4. ### Language Arts

Read the following sentence that contains informational text. Determine which type of word or phrase relationship is being used. The roads of New Orleans remained flooded due to the hurricane. item/category relationship part/whole

1. ### Chemistry

Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in

2. ### Chemistry

A sample of carbon monoxide gas whose mass is 6.37 g is heated from 25 oC to 192 oC at a constant pressure of 4.12 bar. Calculate q (in J) for this process. I got an answer of ~1110J Calculate w (in J) for this process. I am

3. ### science

Concentrated sulfuric acid (18.4 molar H2SO4) has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar, the solution has a density of 1.38 grams per milliliter and can be used as an electrolyte in lead

4. ### Chemistry

If 455-ml of 6.0 M HNO3 is used to make a 2.5 L dilution,what is the molarity of the dilution?