Picture that represents the solution just after the solid MZ is stirred thoroughly in distilled water has to be identified. Concept introduction: Solubility: Solubility is a chemical property of a given substance i.e. solute to dissolve in solvent. For slightly soluble salts the solute dissolves in little amount in solvent to give respective ions and there is always an equilibrium between the ions of the salt and the unionized molecules.
Picture that represents the solution just after the solid MZ is stirred thoroughly in distilled water has to be identified. Concept introduction: Solubility: Solubility is a chemical property of a given substance i.e. solute to dissolve in solvent. For slightly soluble salts the solute dissolves in little amount in solvent to give respective ions and there is always an equilibrium between the ions of the salt and the unionized molecules.
Definition Definition Study of the speed of chemical reactions and other factors that affect the rate of reaction. It also extends toward the mechanism involved in the reaction.
Chapter 19, Problem 19.147P
(a)
Interpretation Introduction
Interpretation:
Picture that represents the solution just after the solid MZ is stirred thoroughly in distilled water has to be identified.
Concept introduction:
Solubility:
Solubility is a chemical property of a given substance i.e. solute to dissolve in solvent.
For slightly soluble salts the solute dissolves in little amount in solvent to give respective ions and there is always an equilibrium between the ions of the salt and the unionized molecules.
(b)
Interpretation Introduction
Interpretation:
Value of Ksp for MZ has to be calculated as the ion concentration in each sphere is 2.5×10−6 M.
Concept introduction:
Solubility:
Solubility is defined as the maximum amount of the solute that can be dissolved in the solvent at equilibrium.
Solubility product constant:
Solubility product constant is defined for equilibrium between solids and its respective ions in the solution. Generally, solubility product refers only to insoluble or slightly soluble ionic substances that make equilibrium in water.
It is defined as the product of concentration of ions of a sparingly soluble salt in its saturated solution at 25oC. The concentration terms are raised to the coefficients of their respective ions. It is denoted by Ksp.
This value indicates the degree of dissociation of a compound in water. More the value of Ksp more is the solubility of the compound.
Considering an equilibrium of salt AxBy with its respective ions in solution and thus Ksp is calculated.
AxBy⇄xAy++yBx-
Ksp=[xAy+]x[yBx-]y
(c)
Interpretation Introduction
Interpretation:
Figure representing the solution after addition of Na2Z (aq) has to be identified.
Concept introduction:
Common ion effect:
Suppression of ionization of a weak electrolyte by the addition of a strong electrolyte in the same solution and one ion must be common in between both the weak and strong electrolyte.
Le Chatelier’s principle:
When a system in equilibrium is subjected to any external disturbance like change of pressure, volume, temperature etc…Then the system acts in a way to prevent that change. This is called Le Chatelier’s principle.
(d)
Interpretation Introduction
Interpretation:
The scene that interprets the situation after lowering of pH and when Z2- is given as CO32− has to be determined.
Concept introduction:
Chemical Equilibrium:
Chemical equilibrium is the process where the rate of forward reaction and the rate of backward reaction are equal.
Le Chatelier’s principle:
When a system in equilibrium is subjected to any external disturbance like change of pressure, volume, temperature etc… Then the system acts in a way to prevent that change. This is called Le Chatelier’s principle.
In the solid state, oxalic acid occurs as
a dihydrate with the formula H2C2O4
C+2H2O. Use this formula to
calculate the formula weight of oxalic
acid. Use the calculated formula
weight and the number of moles
(0.00504mol)
of oxalic acid in each titrated
unknown sample recorded in Table
6.4 to calculate the number of grams
of pure oxalic acid dihydrate
contained in each titrated unknown
sample.
1.
Consider a pair of elements with 2p and 4p valence orbitals (e.g., N and Se). Draw their
(2p and 4p AO's) radial probability plots, and sketch their angular profiles. Then, consider these
orbitals from the two atoms forming a homonuclear л-bond. Which element would have a
stronger bond, and why?
(4 points)
Write the reaction and show the mechanism of the reaction. Include the mechanism
for formation of the NO2+
2. Explain, using resonance structures, why the meta isomer is formed. Draw possible
resonance structures for ortho, meta and para.
Chapter 19 Solutions
Loose Leaf for Chemistry: The Molecular Nature of Matter and Change