O Grades for Andrea Brisby: P. - University of Oklahoma x + E > 0 saplingleaming
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O Grades for Andrea Brisby: P. - University of Oklahoma x + E > 0 saplingleaming.com/ibiscms/mod/ibis/view.php?id=3871621 – a X | *| = 2 0 ... Jump to.. · @ Andrea Brisby - a Sapling Learning macmillan learning 1 2 100 2 3 100 Question 7 of 15 incorrect X IncorrectX 3 0 0 Available From: 11/3/2017 06:00 PM Due Date: 11/8/2017 11:55 PM Points Possible: Grade Category Homework Description: Policies: 5 attempt, 0% penalty, Solutions After Due Date 4 1 A student must make a buffer solution with a pH of 1.0. Determine which of the acids and conjugate baseMnP cd' listed below are the best options to make a buffer at the specified pH. Weak acids: Incorrect. sodium bisulfate monohydrate, Consider the relationship O K=1.20x10?, 3.00 M between buffer pH and weak acid pkg, rather than Kg. to formic acid, K=1.77x10“, 2.00 M determine which acid is the best option to make a buffer propionic acid, Ke=1.34x105, 3.00 M with pH-1.0. O acetic acid, K=1.75x105, 5.00 M 100 5 2 100 600 7 2 0 You can check your answers. You can view solutions after the due date. You have five attempts per question. There is no penalty for incorrect answers. 85 88 Conjugate bases: 100 O sodium propionate, CH3CH3COONa sodium formate, HCOONa sodium sulfate decahydrate, Na2SO4 + 10H2O sodium acetate trihydrate, O CH3COONa+ 3H0' O eTextbook 10 2100 O Help With This Topic 11 2 100 Scroll down to view more. o Web Help & Videos 1200 13 1 100 The final volume of buffer solution must be 100.00 ml and the final concentration of the weak acid must be 0.100 M. Based on this information, what mass of solid Based on this information, what volume of conjugate base should the student weigh out to acid should the student measure to make make the buffer solution with a pH=1.07 the 0.100 M buffer solution? O Technical Support and Bug Reports 14 2 100 15 1 100 O Previous Try Again O Next Exi © 2011-2017 Sapling Learning, Inc about us careers privacy policy tarms of use contact us help E O Type here to search G^ O x 11:26 PM * 11/6/2017 kaExplanation / Answer
a. The buffer is best chosen if pH required is close to pKa of the acid,
weak acid = Sodium bisulfite monohydrate will be best suited to make the pH = 1 as the pKa of the same is 1.9
b. conjugate base = Sodium sulphate decahydrate, Na2SO4.10H2O
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