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The unknown acid H 2 X can be neutralized completely by OH − according to the following (unbalanced) equation: H 2 X ( a q ) + O H − ( a q ) → X 2 − ( a q ) + H 2 O ( l ) The ion formed as a product, X 2− , was shown to have 36 total electrons. What is element X? Propose a name for H 2 X. To completely neutralize a sample of H 2 X, 35.6 mL of 0.175 M OH − solution was required. What was the mass of the H 2 X sample used?

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Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

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Chapter
Section
BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 6, Problem 145IP
Textbook Problem
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The unknown acid H2X can be neutralized completely by OH according to the following (unbalanced) equation:

H 2 X ( a q )   + O H ( a q ) X 2 ( a q ) +   H 2 O ( l )

The ion formed as a product, X2−, was shown to have 36 total electrons. What is element X? Propose a name for H2X. To completely neutralize a sample of H2X, 35.6 mL of 0.175 M OH solution was required. What was the mass of the H2X sample used?

(a)

Interpretation Introduction

Interpretation:

The name of element X has to be identified from the given info.

Concept introduction:

Elements are the simplest chemical substances that cannot be broken down easily.

Explanation of Solution

To identify the element X

Record the given values

Electrons formed from ions X2- = 36

Volume of H2X = 35.6mL

Molarity of H2X = 0

(b)

Interpretation Introduction

Interpretation:

The name of H2X sample has to be identified from the given info.

Concept Introduction: A simple binary acid is in which the anion is attached to hydrogen atom.

(c)

Interpretation Introduction

Interpretation:

The mass of H2X sample has to be identified from the given info.

Concept introduction: Mass is an amount of matter in an object.

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Chapter 6 Solutions

Chemistry: An Atoms First Approach
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