QUESTION 5 In the experiment "Preparation and Standardization of a Sodium Hydroxide Solution", why was the burette rinsed with NaOH before filling it to "zero" for the titration? To remove any residual liquids from the burette To check that the burette works properly To remove any air bubbles and fill the tip of the burette O All of the above

QUESTION 5 In the experiment "Preparation and Standardization of a Sodium Hydroxide Solution", why was the burette rinsed with NaOH before filling it to "zero" for the titration? To remove any residual liquids from the burette To check that the burette works properly To remove any air bubbles and fill the tip of the burette O All of the above

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 Normal 1 Nó Spa... Heading 1 Heading 2 Paragraph Styles 1. What is an equivalence point? a) enough base has been added to neutralize all the acid in the sample b) enough acid has been added to neutralize all the base in the sample c) pH = pKa d) a) or b) 2. If the pH of the equivalence point is 7, acid titrated with a strong base is a a) strong acid b) water c) weak acid d) none of these 3. If the pH of the equivalence point is above 7, acid titrated with a strong base is a a) strong acid b) water c) weak acid d) none of these * Accessibility: Good to go DiFo Text Predictions: On re to search 99+ IA ASUS ZenBook F3 F4 F5 F6 F7 24 & 4. 5. R U. SD G H. lili
What is the best sequence of steps for filling the burette with NaOH for a titration? Lower the burette to eye' level, insert the funnel in the top of the burette, slowly add the NaOH through the funnel, check the burette stopcock is closed O Check the burette stopcock is closed, lower the burette to eye level, insert a funnel in the top of the burette, slowly add the NaOH through the funnel Check the burette stopcock is closed, insert the funnel in the top of the burette, slowly add the NaOH through the funnel, lower the burette to eye level
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uestion Completion Status: QUESTION 13 Consider an acid-base titration in which the base is dispensed from a burette into a flask containing an acid. If any drops of the base adhere to the inner walls of the flask, but do not actually mix with the solution, the calculated acid concentration would be the same as the actual value. lower than the actual value. O higher than the actual value. O Need more information QUESTION 14 What is the BEST numerical value for the quantity of liquid in the graduated cylinder? Save All A Click Save and Submit to save and submit. Click Save All Answers to save all answers.
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Endpoints in titrimetric procedures employing neutralization reactions are determined by:I. PotentiometerII. Visual Inspection III. Indicators III only II & III I & II I, II & III I & III
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A 5.4681 gram sample of beef was analyzed for its N (14g/mole) content and the liberated NH3 was collected in a 99.31 mL of 0.2012 M HCI and 6.28 mL back titration with 0.0120 M NaOH was required. Calculate the percentage protein in the beef sample. (Answers should be written in 2 decimals place and do not include the UNIT)
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