(a) Interpretation: The normality of the given solution is to be calculated. Concept Introduction: The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element. The number of moles is calculated by the formula, Moles = Mass g Molar mass The molarity is calculated by the formula, Molarity = Number of moles of solute Volume of solution L The normality of the solution is calculated by the formula, Normality = Molarity × Number of H + or OH − ions .
(a) Interpretation: The normality of the given solution is to be calculated. Concept Introduction: The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element. The number of moles is calculated by the formula, Moles = Mass g Molar mass The molarity is calculated by the formula, Molarity = Number of moles of solute Volume of solution L The normality of the solution is calculated by the formula, Normality = Molarity × Number of H + or OH − ions .
Solution Summary: The author explains that the atomic mass of an element is defined as the sum of protons and neutrons. The molarity of the solution is calculated by the formula.
The normality of the given solution is to be calculated.
Concept Introduction:
The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.
The number of moles is calculated by the formula,
Moles=MassgMolarmass
The molarity is calculated by the formula,
Molarity=NumberofmolesofsoluteVolumeofsolutionL
The normality of the solution is calculated by the formula,
Normality=Molarity×NumberofH+orOH−ions.
Interpretation Introduction
(b)
Interpretation:
The normality of the given solution is to be calculated.
Concept Introduction:
The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.
The number of moles is calculated by the formula,
Moles=MassgMolarmass
The molarity is calculated by the formula,
Molarity=NumberofmolesofsoluteVolumeofsolutionL
The normality of the solution is calculated by the formula,
Normality=Molarity×NumberofH+orOH−ions.
Interpretation Introduction
(c)
Interpretation:
The normality of the given solution is to be calculated.
Concept Introduction:
The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.
The number of moles is calculated by the formula,
Moles=MassgMolarmass
The molarity is calculated by the formula,
Molarity=NumberofmolesofsoluteVolumeofsolutionL
The normality of the solution is calculated by the formula,
4.
a) Give a suitable rationale for the following cyclization, stating the type of process involved
(e.g. 9-endo-dig), clearly showing the mechanistic details at each step.
H
CO₂Me
1) NaOMe
2) H3O®
CO₂Me
2. Platinum and other group 10 metals often act as solid phase hydrogenation catalysts for
unsaturated hydrocarbons such as propylene, CH3CHCH2. In order for the reaction to be
catalyzed the propylene molecules must first adsorb onto the surface. In order to completely
cover the surface of a piece of platinum that has an area of 1.50 cm² with propylene, a total
of 3.45 x 10¹7 molecules are needed. Determine the mass of the propylene molecules that
have been absorbed onto the platinum surface.
Chem 141, Dr. Haefner
2. (a) Many main group oxides form acidic solutions when added to water. For example solid
tetraphosphorous decaoxide reacts with water to produce phosphoric acid. Write a balanced
chemical equation for this reaction.
(b) Calcium phosphate reacts with silicon dioxide and carbon graphite at elevated temperatures
to produce white phosphorous (P4) as a gas along with calcium silicate (Silcate ion is SiO3²-)
and carbon monoxide. Write a balanced chemical equation for this reaction.