Concept explainers
(a)
Concept introduction: The space filling molecular models represent the atoms and compounds. The same structures indicate the same atoms or compounds. Each sphere indicates an atom and the attached spheres indicate the compound.
(a)
Answer to Problem 1E
Solution: Figure (i)
Explanation of Solution
The figure (i) represents the space filling molecular models of two spheres attached to each other with the same color.
Therefore, figure (i) indicate the diatomic molecule of the same atoms in it. Thus, it corresponds to a pure element.
Figure (i) represent the structure corresponding to pure element.
(b)
Concept introduction: The space filling molecular models represent the atoms and compounds. The same structures indicate the same atoms or compounds. Each sphere indicates an atom and the attached spheres indicate the compound.
(b)
Answer to Problem 1E
Solution: The figures that represent a mixture of two elements are (v) and (vi).
Explanation of Solution
The figures (v) and (vi) represent the space filling molecular models of two differently colored spheres apart from each other.
Therefore, it does not indicate any compound. Instead, it indicates the mixture of two different elements.
Figure (v) and (vi) represent the structures corresponding to a mixture of two elements.
(c)
Concept introduction: The space filling molecular models represent the atoms and compounds. The same structures indicate the same atoms or compounds. Each sphere indicates an atom and the attached spheres indicate the compound.
(c)
Answer to Problem 1E
Solution: The figure that represents a pure compound is (iv).
Explanation of Solution
The figure (iv) represents the space filling molecular models of two spheres attached to each other with the different colors.
Therefore, figure (iv) indicates the diatomic molecule of the different atoms in it. Thus, it corresponds to a pure compound.
Figure (iv) represents the structure corresponding to pure compound.
(d)
Concept introduction: The space filling molecular models represent the atoms and compounds. The same structures indicate the same atoms or compounds. Each sphere indicates an atom and the attached spheres indicate the compound.
(d)
Answer to Problem 1E
Solution: The figures that represent a mixture of an element and a compound are (ii) and (iii).
Explanation of Solution
The figure (ii) represents a space filling molecular model of a diatomic molecule with two spheres of same color attached to each other and a compound with two spheres of different color attached to each other.
Therefore, figure (ii) represents a mixture of diatomic molecule of pure element and a compound.
The figure (iii) represents a space filling molecular model of a monatomic sphere with single spheres of same color apart from each other and a compound with two spheres of different color attached to each other.
Therefore, figure (iii) represents atoms of pure element and a compound.
Figure (ii) and (iii) represent the structures corresponding to a mixture of an element and a compound.
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Chapter 1 Solutions
Chemistry: The Central Science Plus Mastering Chemistry with Pearson eText -- Access Card Package (14th Edition)
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- Denote the dipole for the indicated bonds in the following molecules. ✓ H3C CH3 B F-CCl3 Br-Cl H3C —Si(CH3)3 CH3 OH HO HO H HO OH vitamin Carrow_forward(a) What is the hybridization of the carbon in the methyl cation (CH3*) and in the methyl anion (CH3)? (b) What is the approximate H-C-H bond angle in the methyl cation and in the methyl anion?arrow_forward10:16 ☑ Vo)) Vo) 4G LTE 76% Complete the following reaction by identifying the principle organic product of the reaction. HO OH ↑ CH2N2 OH ? ○ A. 01 N₂H2C OH ОН B. HO OCH3 OH ○ C. HO OH ŎCH₂N2 ○ D. H3CO OH он Quiz navigation 1 2 3 4 5 11 12 Next page 10 6 7 8 9 10arrow_forward
- Which one of the following statements explain why protecting groups are referred to as “a necessary evil in organic synthesis”? Question 12Select one or more: A. They increase the length and cost of the synthesis B. Every synthesis employs protecting groups C. Protecting group have no role to play in a synthesis D. They minimize the formation of side productsarrow_forwardWhich of the following attributes is a key advantage of the chiral auxiliary approach over the chiral pool approach in asymmetric synthesis? Question 10Select one: A. Chiral auxiliaries are cheaper than chiral pool substrates B. Chiral auxiliary can be recovered and recycled unlike chiral pool substrates. C. The use of chiral auxiliaries provide enantiopure products, while chiral pool reactions are only enantioselective D. The chiral auxiliaries are naturally occurring and do not require synthesisarrow_forwardIn the following molecule, indicate the hybridization and shape of the indicated atoms. CH3 CH3 H3C HO: CI:arrow_forward
- Which of the following are TRUE about linear syntheses? Question 7Select one: A. They are easier to execute B. They are the most efficient strategy for all syntheses C. They are generally shorter than convergent syntheses D. They are less versatile compared to convergent synthesesarrow_forwardWhich of the following characteristics is common among chiral pool substrates? Question 4Select one: A. They have good leaving groups B. They are all achiral C. All have a multiplicity of chiral centres D. They have poor leaving groupsarrow_forwardDetermine whether the following reaction is an example of a nucleophilic substitution reaction: H NO2 H+ NO 2 + Molecule A Molecule B Is this a nucleophilic substitution reaction? If this is a nucleophilic substitution reaction, answer the remaining questions in this table. What word or two-word phrase is used to describe the role Molecule A plays in this reaction? What word or two-word phrase is used to describe the role Molecule B plays in this reaction? Use a 6 + symbol to label the electrophilic carbon that is attacked during the substitution. Highlight the leaving group on the appropriate reactant. O Yes ○ No ☐ 0 dx 000 HE ?arrow_forward
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