Module 11 (Acids, Bases) Homework-Google Chrome Secure l https/ ID 83255539 Prob

Question

Module 11 (Acids, Bases) Homework-Google Chrome Secure l https/ ID 83255539 Probilem 10.30 Problem 10.30 Part A A 30.5 ml. sample of a KOH solution of unknown concentration requires 18 1 ml. of 0.100 M H,SO4 solution to reach the end point in a titration How many moles of H,S0, wene necessary to reach the end point? Express your answer to three significant Egures mol My Answers Sve l Part B How many equivalents? Express your answer to three significant figures Eq My Answers Gve Part c What is the molarity of the KOH solution? Expeess your answer to three significant figures

Explanation / Answer

Question A

Moles of H2SO4 used = 18.1 x 0.1 /1000 = 0.00181 moles

Question B

Equivalent of KOH = 0.00181 x 2 = 0.00362 Moles

Question C

Molarity of the KOH = 0.00362 x 1000 / 30.5 = 0.1186 M

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