A solution prepared by mixing the given amount of bases is given. The major species present, [ OH − ] and the pH of this solution is to be calculated. Concept introduction: The pH of a solution is define as a figure that expresses the acidity of the alkalinity of a given solution. A logarithmic scale is used on which, the value 7 corresponds to a neutral species, a value less than 7 corresponds to an acid and a value greater than 7 corresponds to a base. The pH of a solution is calculated by the formula, pH = − log [ H + ] The pOH of a solution is calculated by the formula, pOH = − log [ OH − ] The sum, pH + pOH = 14 To determine: The major species present, [ OH − ] and the pH of the given solution.

Question

ii) Molecular ion peak :the peak corresponding to the intact molecule (with a positive charge) What would the base peak and Molecular ion peaks when isobutane is subjected to Mass spectrometry? Draw the structures and write the molecular weights of the fragments. Circle most stable cation a) tert-butyl cation b) Isopropyl cation c) Ethyl cation. d) Methyl cation 6. What does a loss of 15 represent in Mass spectrum? a fragment of the molecule with a mass of 15 atomic mass units has been lost during the ionization Process 7. Write the isotopes and their % abundance of isotopes of i) Cl

Answer 1

Question

Chapter 13, Problem 92E

(a)

Interpretation Introduction

Interpretation: A solution prepared by mixing the given amount of bases is given. The major species present, [OH−] and the pH of this solution is to be calculated.

Concept introduction: The pH of a solution is define as a figure that expresses the acidity of the alkalinity of a given solution. A logarithmic scale is used on which, the value 7 corresponds to a neutral species, a value less than 7 corresponds to an acid and a value greater than 7 corresponds to a base.

The pH of a solution is calculated by the formula, pH=−log[H+]

The pOH of a solution is calculated by the formula, pOH=−log[OH−]

The sum, pH+pOH=14

To determine: The major species present, [OH−] and the pH of the given solution.

(b)

Interpretation Introduction

Interpretation: A solution prepared by mixing the given amount of bases is given. The major species present, [OH−] and the pH of this solution is to be calculated.

Concept introduction: The pH of a solution is define as a figure that expresses the acidity of the alkalinity of a given solution. A logarithmic scale is used on which, the value 7 corresponds to a neutral species, a value less than 7 corresponds to an acid and a value greater than 7 corresponds to a base.

The pH of a solution is calculated by the formula, pH=−log[H+]

The pOH of a solution is calculated by the formula, pOH=−log[OH−]

The sum, pH+pOH=14

To determine: The major species present, [OH−] and the pH of the given solution.

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