MISSED THIS? Watch IWE 14.4; Read Section 14.6. You can click on the Review link to access the section in your e Text. Four solutions of unknown NaOH concentration are titrated with solutions of HCl. The following table lists the volume of each unknown NaOH solution, the volume of HCl solution required to reach the equivalence point, and the concentration of each HCl solution. NaOH volume (mL) 6.00 22.00 14.00 28.00 HCl volume (mL) 7.97 11.24 10.95 33.18 [HC1] (M) 0.1799 0.1311 0.0789 0.1421 ▼ Part C Calculate the concentration (in M) of the unknown NaOH solution in the third case. NaOH volume (mL) HCl volume (mL) [HC1] (M) 14.00 10.95 0.0789 Express your answer using three significant figures. concentration= 15| ΑΣΦ Submit Request Answer Part D ? Express your answer using four significant figures. P Pearson Review | Constants I Periodic Table M Calculate the concentration (in M) of the unknown NaOH solution in the fourth case. NaOH volume (mL) HCl volume (mL) [HC1] (M) 28.00 33.18 0.1421 Copyright © 2023 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us |

MISSED THIS? Watch IWE 14.4; Read Section 14.6. You can click on the Review link to access the section in your e Text. Four solutions of unknown NaOH concentration are titrated with solutions of HCl. The following table lists the volume of each unknown NaOH solution, the volume of HCl solution required to reach the equivalence point, and the concentration of each HCl solution. NaOH volume (mL) 6.00 22.00 14.00 28.00 HCl volume (mL) 7.97 11.24 10.95 33.18 [HC1] (M) 0.1799 0.1311 0.0789 0.1421 ▼ Part C Calculate the concentration (in M) of the unknown NaOH solution in the third case. NaOH volume (mL) HCl volume (mL) [HC1] (M) 14.00 10.95 0.0789 Express your answer using three significant figures. concentration= 15| ΑΣΦ Submit Request Answer Part D ? Express your answer using four significant figures. P Pearson Review | Constants I Periodic Table M Calculate the concentration (in M) of the unknown NaOH solution in the fourth case. NaOH volume (mL) HCl volume (mL) [HC1] (M) 28.00 33.18 0.1421 Copyright © 2023 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us |

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...

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1. The number of moles of HCl contained in the 12-mL solution added 2. The number of moles of CH3COOH which participated in the reaction upon adding 12-mL of 1.5 M HCl 3. The number of moles of CH3COOK which participated in the reaction upon adding 12-mL of 1.5 M HCl 4. The pH of the original buffer solution 5. The pH of the final buffer solution 6. The final ratio of the CH3COOH and CH3COOK 7. The change in pH, in percentage *Use 2 decimal places
P5
1. Plot (and cite examples) the titration curve of the following: a. strong acid vs strong base b. strong acid vs weak base c. weak acid vs weak base. 2. Explain the characteristic shape of each of the plotted titration curves on item # 1.
a) In a NaOH and HCl titration lab: Suppose you add 40 ml of water instead of the 45 mL. How will this affect the calculations for the molarity of the HCI? (In this case, the molarity of HCl turned out to be 0.559 mol/L). While being specific. Explain why it will not matter or it will make the molarity high or it will make the molarity low. b) if you disregard the instructions to titrate until a persistent blue endpoint is reached and instead conclude the titration at the initial appearance of blue, describe the impact on the reported molarity of the CoC12 solution. Provide specific details and specify whether the reported molarity will be higher, lower, or remain unaffected.
Which of the following is not used to be standardized against KHP? a. H2SO4 b. NaOH c. NH3 d. NH4
Please help in solving e-f of question. Thanks
1. Plot (and cite examples) the titration curve of the following: a. strong acid vs strong base b. strong acid vs weak base c. weak acid vs weak base. 2. Explain the characteristic shape of each of the plotted titration curves on item # 1.
Which plot accurately represents the titration between 50.0 mL unknown HNO2 concentration and 0.15 M NaOH? А. В. Base (mL) Base (mL) C. D. Base (mL) Base (mL) Graph A Graph B Graph D Graph C Hd
50.0 mL of an unknown concentration of HNO3 were titrated using 15 mL of 0.1 M NaOH. Determine the concentration of the HNO3. 0.0231 M 0.03 M 0.3 M 0.35 M
This is about determinition of acid content in vinegar through titration, please answer the questions. 1. What is the purpose of standardization? 2. What is the primary standard used (name and formula)? ANS: KHP 3. Suppose that the KHP is not completely dry. Will the reported molar concentration of the sodium hydroxide solution be higher, lower, or unaffected? Explain. 4. In preparing the buret for titration the final rinse is with the NaOH titrant rather than with distilled water. Explain. 5. The procedure suggests the addition of only 2 drops of phenolphthalein. What will be the effect to the analysis if larger amount of phenolphthalein is added?
Phosphoric Acid is considered polyprotic. What does this mean? What does this imply about a titration of this molecule? If there is still enough time, draw a titration curve for formic acid. Use a separate sheet of paper If there is still enough time, draw a titration curve for phosphoric acid. Use a separate sheet of paper Compare and contrast the two titration curves.