What is the molar mass of the metal hydroxide?Express your answer to three significant figures and include the appropriate units An 8.65-g sample of an unknown group 2A metalhydroxide is dissolved in 85.0 mL of water. Anacid-base indicator is added and the resultingsolution is titrated with 2.50 M HCI(aq) solution.The indicator changes color, signaling that theequivalence point has been reached after 56.9 mLof the hydrochloric acid solution has been added.

Answered: An 8.65-g sample of an unknown group 2A…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter4: Chemical Reactions In Solution

Section: Chapter Questions

Problem 4.109QE

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Question

What is the molar mass of the metal hydroxide?

Express your answer to three significant figures and include the appropriate units

An 8.65-g sample of an unknown group 2A metal
hydroxide is dissolved in 85.0 mL of water. An
acid-base indicator is added and the resulting
solution is titrated with 2.50 M HCI(aq) solution.
The indicator changes color, signaling that the
equivalence point has been reached after 56.9 mL
of the hydrochloric acid solution has been added.

Expert Solution

Step 1

The point where equivalent quantities are brought together is called equivalence point. The reaction in the question is about the neutralization reaction of HCl with M(OH)_2.

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