Question

Skills Review: Titration Objective: Determine the concetration of an acid by mas percent and by molarity....

Skills Review: Titration

Objective: Determine the concetration of an acid by mas percent and by molarity.

Summary

You will perform four titrations to brush up on titration skills. The analytes used in the experiment are commercial vinegar and hydrochloric acid. The titrant used for all titrations is sodium hydroxide. The indicators used to find the endpoint of the titrations are methyl red and phenolphthalein.

Titrations #1-commerical vinegar and sodium hydroxide with methyl red indicator

Titrations #2-commerical vinegar and sodium hydroxide with phenolphalein indicator

Titrations #3-hydrochloric acid and sodium hydroxide with methyl red indicator

Titrations #4-hydrochloric acid and sodium hydroxide with phenolphthalein indicator

Pre-Lab Assignment

1a) What information/data is required to calculate the mass perent of a solution?

b) What information/data is required to calculate the molarity of a solution?

c) Look up the pH range and expected color changes for methyl red and phenolphthalein.

d.) Write a detailed procedure to accomplish the objective, complete with materials and methods.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A student determines the acetic acid concentration of a sample of distilled vinegar by titration of...
A student determines the acetic acid concentration of a sample of distilled vinegar by titration of 25.00 mL of the vinegar with standardized sodium hydroxide solution using phenolphthalein as an indicator. Which error will give an acetic acid content for the vinegar that is too low? (A) Some of the vinegar is spilled when being transferred from the volumetric flask to the titration flask. (B) The NaOH solution is allowed to stand for a prolonged period after standardization and absorbs...
A titration is carried out between hydrochloric acid and sodium hydroxide. At the beginning of the...
A titration is carried out between hydrochloric acid and sodium hydroxide. At the beginning of the experiment, 12.00 mL of 0.9881 M hydrochloric acid is placed in an Erlenmeyer flask with additional water and the indicator, phenolphthalein. What is the molarity of the sodium hydroxide solution if it takes 5.55 mL to neutralize the acid and reach the end point? In the flask below, draw the chemical substances (other than water) present at the end point of the titration.
In the titration of 10.00 ml of sodium hydroxide with 0.1500 M hydrochloric acid, an equivalence...
In the titration of 10.00 ml of sodium hydroxide with 0.1500 M hydrochloric acid, an equivalence volume of 15. 25 mL is obtained using a pH meter to monitor the titration. (a) If the same titration were carried out using an acid-base indicator with an acid dissociation constant of 1.58 x 10-5 , what would be the titrant volume required to get to the endpoint
Procedure Experiment 1: Standardize an NaOH Solution Using Benzoic Acid as Primary Standard Part 1: Prepare...
Procedure Experiment 1: Standardize an NaOH Solution Using Benzoic Acid as Primary Standard Part 1: Prepare the NaOH Solution Take a 250 mL volumetric flask from the Containers shelf and a balance from the Instruments shelf and place them on the workbench. Zero the mass of the volumetric flask on the balance. Take sodium hydroxide from the Materials shelf and add 1 g to the flask. Record the mass from the balance display. Place the volumetric flask on the workbench....
SECTION 1: True (T) or False (F) 1. _____ When an electron emits energy in the...
SECTION 1: True (T) or False (F) 1. _____ When an electron emits energy in the form of light, it drops from a higher energy level to a lower energy level. 2. _____ When a white solid is dissolved in a beaker containing room-temperature water, the solution becomes hot. This is an example of an endothermic reaction. 3. _____ The Lewis structure of NO2 is an exception to the octet rule. 4. _____ For any form of visible light, the...
Procedure Preparation of Reagents 1. Starch indicator will be provided 2. Solid potassium iodide will be...
Procedure Preparation of Reagents 1. Starch indicator will be provided 2. Solid potassium iodide will be available 3. 0.3 M H2SO4 will be available 4. ~0.04 M Sodium thiosulfate solution will be provided. You should be able to complete the experiment with 250 mL of this solution. 5. Preparation of 0.01M KIO3 Solution: a. Accurately weigh approximately 0.535 g of solid reagent and record the mass to 4 decimal places. b. Deliver the KIO3 to a 250 mL volumetric flask...
Water Hardness Lab follow up Questions Trial Initial EDTA Volume (mL) Final EDTA Volume (mL) Total...
Water Hardness Lab follow up Questions Trial Initial EDTA Volume (mL) Final EDTA Volume (mL) Total Volume of EDTA Used (mL) 1 8.5 6 2.5 2 5.0 3.0 2.0 3 3.0 0.5 2.3 Average Volume of EDTA Used (mL): 2.3 Average Volume of EDTA Used (mL) Concentration Ca2+ Ions Per Liter of Water (mol/L) Water Hardness (ppm CaCO3) 2.3 0.0023 230 2.Approximately how much calcium would you ingest by drinking six, 8-oz glasses of your local water? Hint: 1 oz...
1.) You will work with 0.10 M acetic acid and 17 M acetic acid in this...
1.) You will work with 0.10 M acetic acid and 17 M acetic acid in this experiment. What is the relationship between concentration and ionization? Explain the reason for this relationship 2.) Explain hydrolysis, i.e, what types of molecules undergo hydrolysis (be specific) and show equations for reactions of acid, base, and salt hydrolysis not used as examples in the introduction to this experiment 3.) In Part C: Hydrolysis of Salts, you will calibrate the pH probe prior to testing...
Acid-Base Behavior In addition to following the general safety rules, chemicals need to be handled properly....
Acid-Base Behavior In addition to following the general safety rules, chemicals need to be handled properly. In particular, two very important classes of compounds called acids and bases require special attention. These compounds are commonly used reagents in the laboratory; therefore, understanding their proper disposal is beneficial. Physical differences between acids and bases can be detected by the some of the five senses, including taste and touch. Acids have a sour or tart taste and can produce a stinging sensation...
Below is the background info for the lab assignment. The 4 blank boxes are the questions...
Below is the background info for the lab assignment. The 4 blank boxes are the questions I would like answers too. The end point for the fine titration was 35.90 mL in the burette when the solution turned bright green again. And the coarse titration I got 35.36mL as the end point. 35.9 mL is exact in case you need that info. Thanks! Background In this lab, we will determine the amount of alcohol (ethanol), C2H5OH, in a commercial vodka...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT