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(a)
Interpretation:
The longer bond has to be predicted between O-H hydrogen bond and O-H covalent bond.
Concept introduction:
Hydrogen bonding: It is an
This type of bonding does not sharing of electrons in a covalent bond; it is attraction between the positive and negative poles of charges atoms.
Polarity: It is a well separation of electric charge leading to a molecule or chemical compounds having an electrical dipole moment. Generally the polar molecules must contain polar bonds due to a different in electronegative between the bonded atoms.
(b)
Interpretation:
The stronger bond has to be predicted between O-H hydrogen bond or O-H covalent bond.
Concept introduction:
Hydrogen bonding: It is a electromagnetic attraction between polar molecules with hydrogen bonds to a larger atom (for example oxygen or nitrogen) atoms.
This type of bonding does not sharing of electrons in a covalent bond; it is attraction between the positive and negative poles of charges atoms.
Polarity: It is a well separation of electric charge leading to a molecule or chemical compounds having an electrical dipole moment. Generally the polar molecules must contain polar bonds due to a different in electronegative between the bonded atoms.
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Chapter 3 Solutions
Essential Organic Chemistry (3rd Edition)
- What is a driving force? Name two common and important driving forces, and give an example of each. What is entropy? Although the total energy of the universe is constant, is the entropy of the universe constant? What is a spontaneous process?arrow_forwardWhich of the following molecules or ions contain polar bonds? (a) O3 (b) S8 (c) O22 (d) NO3 (e) CO2 (f) H2S (g) BH4arrow_forwardhat is meant by the term driving forces? Why are mailer spread and energy spread considered to be driving forces?arrow_forward
- Explain why water “beads up” on a freshly waxed car, but not on a dirty, unwaxed car.arrow_forwardPotassium bromide has the same lattice structure as NaCl. Given the ionic radii of K+ (133 pm) and Br (196 pm), calculate the density of KBr.arrow_forwardFigure 4.1 is a cartoon depiction of liquid water at the molecular level. a. (E) Label at least one representation of a covalent bond and at least one representation of anintermolecular force found in Figure 4.1. b. (E) Which are shorter and stronger: covalent bonds p intermolecular forces [circle one]?arrow_forward
- A chemist wants to observe the following reaction: 2H2 + O2 → 2H2O The chemist is standing inside a room with oxygen in the air and has a balloon filled with hydrogen. The chemist holds a small flame up to the hydrogen balloon. When the balloon pops, the hydrogen explodes in a ball of fire. Based on what you know about breaking and forming bonds, explain which part of the reaction is higher in energy (i.e., does it take more energy to break the bonds of the reactants, or is more energy given off when the product bonds are formed?). Defend your answer in three to five sentences.arrow_forwardHelp me pleasearrow_forwardRank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. chemical symbol, chemical formula or Lewis structure substance boiling point A. He (Choose one) e ala B. Fe (Choose one) e Ar H–C=N: (Choose one) e H –C=C– H (Choose one) e Explanation Check O 2022 McGraw Hill LLC. AIl Rights Reserved. Terms of Use I Privacy Center Accessibility 23 étv 80 DI DD esc F7 FB F10 11 F3 F4 F5 F9 F1 F2 @ %23 $ % & 1 7 8 < cOarrow_forward
- The amount of UVA radiation hitting a surface at sea level in a lightly clouded day isabout 70W/m2. About half of that can be absorbed by the skin. A typical carbon-carbon bond requires 348 kJ/mol to break. A person lies on the beach for about 1hour without sunscreen (i.e. fully exposed to UVA radiation). Estimate the numberof C-C bonds broken in this person’s back (about 0.18 m2) over that period. Assumethat the average wavelength of UVA is 335 nm.arrow_forward4. Write a balanced chemical equation that corresponds to the enthalpy of formation of the following: a. Fe;O3 b. coarrow_forward+ < 1. NaCN 2. H₂O Drawing a Atoms, Bonds and Rings OH 1 Br CN OH Charges N M Narrow_forward
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