
EBK CHEMISTRY
12th Edition
ISBN: 8220102797857
Author: Chang
Publisher: YUZU
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Chapter 22, Problem 22.48QP
Interpretation Introduction
Interpretation: The balanced chemical equation for the thermal decomposition of aluminium nitrate has to be written.
Concept Introduction:
Thermal decomposition:
It is also known as thermolysis. It is the process in which a chemical decomposition takes place by the supply of heat energy. The word “thermos” means heat and “lysis” is the suffix word which represents the cleavage or decomposition process.
Balanced equation:
- It is a chemical equation in which the number of each type of atoms will be equal in the stoichiometric ratios on both the sides of the equation.
- The concept of writing a balanced chemical equation is based on the law of conversion of mass
- According to the law of conversion of mass, in a
chemical reaction the mass of total amount of the product should be equal to the total mass of the reactants. - First write the reaction from the given information.
- Then count the number of atoms of each element in reactants as well as products.
- Insert some positive integers as coefficients of reactants as well as products in order to get the equal number of all elements on both sides of the equation.
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Rank each of the following substituted benzene molecules in order of which will react fastest (1) to slowest (4) by electrophilic
aromatic substitution.
Explanation
Check
CF3
(Choose one)
OH
(Choose one)
H
(Choose one)
(Choose one)
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Identifying electron-donating and electron-withdrawing effects
For each of the substituted benzene molecules below, determine the inductive and resonance effects the substituent will have on the
benzene ring, as well as the overall electron-density of the ring compared to unsubstituted benzene.
Molecule
Inductive Effects
Resonance Effects
Overall Electron-Density
CF3
O donating
O donating
O electron-rich
O withdrawing
withdrawing
O no inductive effects
O no resonance effects
O electron-deficient
O similar to benzene
OCH3
Explanation
Check
O donating
O donating
○ withdrawing
withdrawing
O no inductive effects
no resonance effects
electron-rich
electron-deficient
O similar to benzene
Х
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The acid-base chemistry of both EDTA and EBT are important to ensuring that the reactions proceed as desired, thus the pH is controlled using a buffer. What percent of the EBT indicator will be in the desired HIn2- state at pH = 10.5. pKa1 = 6.2 and pKa2 = 11.6 of EBT
Chapter 22 Solutions
EBK CHEMISTRY
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