A 625 mg sample of sodium bicarbonate tablet required 7.30 mL of 0.9580N sulfuric acid solution to reach the methyl red endpoint. PRELIMINARY QUESTION: Which of the following statements is/are TRUE? I. The titrant used is sulfuric acid solution. П. The end point is a red/pink solution. III. This is an example of direct assay titration.

A 625 mg sample of sodium bicarbonate tablet required 7.30 mL of 0.9580N sulfuric acid solution to reach the methyl red endpoint. PRELIMINARY QUESTION: Which of the following statements is/are TRUE? I. The titrant used is sulfuric acid solution. П. The end point is a red/pink solution. III. This is an example of direct assay titration.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Could someone help me answer these questions? I am unsure on how to go about this.
In a test tube with 0.3 mL of Aniline, 5 mL of 10% NaOH, 0.4 mL of benzene sulfonyl chloride. Add a few drops of 4M KOH to make sure it is alkaline and use a litmus paper. Let it stand for 10 minutes. Pour 6M HCl dropwise until it acidify. Explain what happens to the mixture before and after adding HCl. If a precipitate is formed, collect it by filtration or decantation. Test for solubility of the precipitate in 3 mL of 2.5M NaOH. Heat to 50 OC. Shake the tube well for 3 minutes. Explain what happens to the mixture after adding NAOH. Before adding HCl After adding HCl After adding NaOH
Given NaOH pellet and water, write down the procedure to make a concentration gradient of 0, 0.1, 0.2, 0.4, 0.8, 1.6 mM (1mL each).
Would appreciate help in explaining and showing how to calculate these questions, especially with the different mL concentrations. Thank you.
hexamethylenetetramine. Qualitative and quantitative analysis?
Use the titration data below to answer the following questions regarding the titration of an unknown acid with sodium hydroxide. a.)How many acidic protons are present in this unknown acid? b.For the volume change between 8 and 9 mL, what is the value of the first derivative (dpH/dV)? c.) What is the pKa1 for this unknown acid?
A neutralization titration was performed to determine the benzoic acid (C6H5COOH) in a 500 mL sample. In order to prepare the titrant, 5 grams of NaOH was weighed and dissolved in 1 L of distilled water. 10 mL of the sample was titrated with the NaOH solution after adding an appropriate indicator to the erlenmeyer. Four trials were done and 2.5 mL, 2.7 mL, 2.6 mL and 2.4 mL of NaOH were consumed. What is the mass of benzoic acid as gram in the sample. (C:12 g/mol, H:1 g/mol, O:16 g/mol, Na: 23 g/mol)
Question 24 This problem requires a numerical answer. Type your answer into the box provided. Do not include any units. Report the answer to two decimal places. If Canvas rounds to fewer that is ok, but you should not do so independently. 5.00 mL of 0.100o M ammonia (NH3, K, = 1.8x10 5) is titráted with 0.100 M HNO3. Calculate the %3D pH after 1.00 mL of HNO3 is added.
What is the result when these samples are mixed with 5 mL strong alkali NaOH then 1ml ethanol a. vegetable oil b. margarine c. mineral oil
A potentiometric titration of acetic acid and 0.100 M NaOH produced the 2nd derivative curve below. Identify the volume of NaOH used to neutralize the acetic acid.
Thank you! Data included in pictures! No hand drawn graphs!! Determine the equivalence point and the endpoint of the sudsy ammonia/citric acid reaction by graphing the titration data (pH vs volume citric acid) from Table 3: Titration of Sudsy Ammonia with 0.25 M Citric Acid Data with the Chosen Indicator. Draw a green arrow (use ‘Insert Shape’ feature to do this once you have copied your graph from Excel) on your graph indicating the data point that represents your equivalence point. Draw a blue arrow (use ‘Insert Shape’ feature to do this once you have copied your graph from Excel) on your graph indicating the data point that represents your endpoint. Use a graphing software to create the x-y scatter plot showing the pH of the experimental solution as a function of the volume of citric acid (the titrant) added for the titration data in Question 9. On your graph, the x-axis should be the volume of citric acid added (mL), and the y-axis should be the pH of the experimental…
Tony is showing a bacterium having high pH requirement for its growth. He then has to prepare a minimal medium at pH 9. Adding 0.5 ml of the pH indicator to 10 ml of the medium, the solution remained colorless. The pH of the medium was adjusted using 2.25 ml of the 0.05 N titrant. a. What was the pH indicator utilized? b. What is the amount of 1 N titrant needed to adjust 150 ml of minimal medium to pH 9? c.What was the titrant he used?