Jespersen, The Molecular Nature of Matter, 7e 2110/2140 (CHEM I/ Assignment Grad

Question

Jespersen, The Molecular Nature of Matter, 7e 2110/2140 (CHEM I/ Assignment Gradebook ORION gnment FULL SCREEN PRINTER VERSION BACK Review Problem 4.124 [x Incorrect. d you use the correct ratio of stoichiometric coefficients? Did you use the correct molarities for the compounds of interest? How many mililiters of o.231 M NaoH solution are needed to completely neutralize of 0.233 M HJPOs solution? The reaction is 47.3 mL is +/-2% By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Question Attempts: 1 of 3 used SAME FOR LATER SUSHTT ANSWER You have surpassed the number of attempts to eam Maximum Points for this question. For this attempt, and any subsequent attempt(s), you will earn points according to the Point Potential policy set by your instructor. o.Palix l 2000-2012 lohn Wiley Sons, Inc. All Rights Reserved A Division of lohn wiley & Sons, Inc. Version 4.22.2

Explanation / Answer

the balanced equation :

3 NaOH (aq) + H3PO4 (aq)   ----------------> Na3PO4 (aq) + 3 H2O (l)

M1 V1/n1          M2 V2 / n2

M1 V1 / n1 = M2 V2 / n2

0.231 x V1 / 3 = 0.233 x 47.3 / 1

V1 = 143 mL

volume of NaOH = 143 mL

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