Why Is It Not Important To Know Exactly How Much Water Was Added To Dissolve The KHP And Your Unknown?

Why doesn’t it matter how much water you add to the acetic acid unknown?

Adding water does not affect your results, since you are measuring the amount of acid in solution, not the amount of water present.

Place a clean and dry 50-mL buret in a buret clamp.

If the buret is wet, you will need to rinse it out with a small amount of the NaOH solution..

What can be added to a solution to decrease its concentration?

Alex D. The concentration can be decreased by 2 ways, by increasing the solute, or decreasing the water. Increasing the solute will increase the solution’s concentration. This can be done by simply adding more of your compound into the solution and dissolving it.

Does the addition of water affect the result of the titration?

It does not affect the titration reading as water does not react with the reagents or change the number of moles of acid added.

What happens to the concentration as the quantity of water decreases?

Dilutions. When additional water is added to an aqueous solution, the concentration of that solution decreases. This is because the number of moles of the solute does not change, but the total volume of the solution increases.

Why is it important to fill the space below the tap in a burette?

Filling the burette this way is also useful because it means the space under the tap is also filled with liquid. This is important, as the burette is calibrated to include this volume. … When the end point is reached, the burette tap is closed, and the volume of alkali added is recorded.

Why isn’t it necessary to measure the volume of water added to the analyte in a titration?

Adding Water to the Analyte When you add water to the analyte, you dilute a solution of unknown molarity. This dilution ultimately does not affect the experimental results. The concentration of the analyte is still unknown.

What happens if you overshoot the endpoint in titration?

Terms in this set (3) If you overshoot the endpoint in titration of the KHP, an error will happen in your calculations for the molarity of NaOH you are standardizing. … Adding more of the base needed to reach the equivalence would mean you have higher volume which will make the calculated concentration of NaOH lesser.

Why do we need standardization of KOH solution?

Standardization of KOH and Determination of an Acid Solution In this experiment, you will determine the precise concentration of a weak acid solution that has an unknown molarity. You will do this by performing a series of titrations.

How do you tell if you have exceeded the equivalence point in your titration?

How do you tell if you have exceeded the equivalence point in your titration? – We have to find an indicator which will be able to tell us whether the solution is neutralized into pH 7. The indicator might have different color for each pH. So, it will be able to tell us the pH of that particular solution.

How does the amount of water affect a solution?

1 Answer. Adding water accounts to increasing the volume of the solution. Hence more amount of solute can be dissolved since solubility of a salt depends on the amount of salt dissolved per unit volume. … of ions produced in the solution.

Why does the volume of water added to dissolve the potassium hydrogen phthalate Khp not matter?

The amount of water used to dissolve the KHP did not affect the results of the standardization because water serves as solvent and has no influence on the quantity of the acid or the titrating agent. The dilution does not affect the final titration of the sample.

Why do you dilute a solution before titration?

A solution used for titration needs to be dilute enough for allow an error of 2 drops(0.1 ml) to be added without causing a major error in measuring the concentration of the titrable analyte. If a solution is concentrate a drop extra will cause a large error.

What is the relationship between concentration and color?

The relative intensity of color is proportional to the concentration of the dissolved compound. The greater the compound’s concentration, the darker (more intense) the solution color appears.

Why doesn’t the indicator affect the titration results?

In all titrations, the amount of indicator added to the solution to be titrated is just a small amount. … Since titration is not as sensitive as any instrumental methods, the low volume of the titrant consumed by the indicator is not that big of a deal because it would not be reflected on the final volume.

Does it matter how much water you add in Step 1 of titration of the unknown acid Why or why not?

Any distilled water you add to this erlenmeyer will change its volume, but won’t change the amount of substance of acid inside it, neither the initial volume you added of the acid solution. Sometimes it’s even recommended that you add some water to make the color change more visible.