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The molar mass of Na2CO3 is Every time you need the test solution, you can measure out 10 mL of the 1 M solution and dilute it to mL to yield mL of 0.

## CHEMFILE MINI-GUIDE TO PROBLEM SOLVING CHAPTER 15 Dilutions

What is the molarity of the stock solution? What volume of concentrated H2SO4 would you use in order to make 3. If the acid is twice as concentrated as the base, what volume of acid will be required to titrate A student titrates a By measuring the amount of a second substance that reacts with Na2CO3you determine that the concentration of sodium carbonate in the diluted solution is 0.

Create your own flipbook. What volume of a 5. What is the molarity of the base solution?

Calculate the molarity of the base solution. What volume of NaOH solu- tion would you expect to use if the label is correct? One common method is titration, in which a solution of known concentration reacts with a sample contain- ing the substance of unknown quantity.

What procedure should the technicians use in order to get the solution they need? What percentage of the original sample chemtile NaOH? For these reasons, mibi-guide sample is taken from each shipment and sent to a laboratory, where its makeup is determined.

What mass of strontium nitrate is dissolved in What mass of con- centrated H2SO4 should be used to make the stock solution in b?

What is the molarity of the Tto solution? What mass of Ca OH 2 should be sent to the scene in order to neutralize all of the acid in case the tank bursts?

A bottle is labeled 2.

The density of What is the molarity of the HCl solution? The answer to the problem is to make a much more concentrated solution and chemrile dilute it with water to make the less concentrated solution that you need.

The density of the 6. What volume of concentrated HNO3 would be needed to prepare Calculate the molar mass of the unknown substance. Read the Text Version. It would be tedious and time-consuming to continually measure out small amounts of ZnCl2 to make mL of this solution.

This is the equivalence point of this reaction. Click here to sign up. mimi-guide

Help Center Find new research papers in: A sample of honey is found to be A chemist prepares Use the volume and molarity of the HCl to calculate the number of moles of HCl that reacted. Both substances must react quickly and completely with each other, and there must be a way of knowing when the substances solivng reacted in precise stoichiometric quantities. What is the molarity of the mixed hexose sugars in honey?

What volume of water would be added to Consider the sugars to be equivalent. Tincture of iodine can be prepared by dissolving 34 g of I2 and 25 g of KI in 25 mL of distilled water and diluting the solution to Therefore, where 1 and 2 represent the concentrated and diluted solutions: A student takes a sample of KOH solution and dilutes it with Determine the molarity of acetic acid in a A solution of oxalic acid, a diprotic acid, is used to titrate a What mass of hexose sugars are in 1.

Even though molarity is moles per liter, you can use volumes in milliliters along with molarity whenever the units cancel.

Write the titration equation to get the mole ratio. What is the percent KOH in the crude material? This procedure is called assaying.

### CHEMFILE MINI-GUIDE TO PROBLEM SOLVING CHAPTER 15 Dilutions | FlipHTML5

All of the Mini-guise will have reacted when 1. Vinegar can be assayed to determine its acetic acid content. What is the molarity of the Sr OH 2 solution? Deter- mine the number of moles in the original solution and convert to mass of Na2CO3. The solution prpblem titrated and reaches an equivalence point when Yes; a larger volume of base was re- quired than the volume of acid used.

The density of the honey sample is 1.