
Concept explainers
(a)
Interpretation: The effect on temperature on the stretching of rubber band is to be stated and whether the stretching is an exothermic or endothermic process is to be explained in terms of intermolecular forces. Also, the sign of
Concept introduction: Rubber is a
To determine: The effect on temperature on the stretching of rubber band.
(b)
Interpretation: The effect on temperature on the stretching of rubber band is to be stated and whether the stretching is an exothermic or endothermic process is to be explained in terms of intermolecular forces. Also, the sign of
Concept introduction: Rubber is a polymer (long chain molecules) made from organic compound isoprene. The molecules in rubber are arranged in a tangled up position than an aligned position and due to thermal motion they lose their alignment and go back to their tangled state and this is called an elastic contact caused by an entropic force.
To determine: The stretching is an exothermic or endothermic process.
(c)
Interpretation: The effect on temperature on the stretching of rubber band is to be stated and whether the stretching is an exothermic or endothermic process is to be explained in terms of intermolecular forces. Also, the sign of
Concept introduction: Rubber is a polymer (long chain molecules) made from organic compound isoprene. The molecules in rubber are arranged in a tangled up position than an aligned position and due to thermal motion they lose their alignment and go back to their tangled state and this is called an elastic contact caused by an entropic force.
To determine: The above results in terms of intermolecular forces.
(d)
Interpretation: The effect on temperature on the stretching of rubber band is to be stated and whether the stretching is an exothermic or endothermic process is to be explained in terms of intermolecular forces. Also, the sign of
Concept introduction: Rubber is a polymer (long chain molecules) made from organic compound isoprene. The molecules in rubber are arranged in a tangled up position than an aligned position and due to thermal motion they lose their alignment and go back to their tangled state and this is called an elastic contact caused by an entropic force.
To determine: The sign of
(e)
Interpretation: The effect on temperature on the stretching of rubber band is to be stated and whether the stretching is an exothermic or endothermic process is to be explained in terms of intermolecular forces. Also, the sign of
Concept introduction: Rubber is a polymer (long chain molecules) made from organic compound isoprene. The molecules in rubber are arranged in a tangled up position than an aligned position and due to thermal motion they lose their alignment and go back to their tangled state and this is called an elastic contact caused by an entropic force.
To determine: The molecular explanation for the sign of

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Chapter 22 Solutions
CHEMISITRY W/OWL PKG LOOSELEAF
- Indicate the products obtained by mixing 2,2-dimethylpropanal with acetaldehyde and sodium ethoxide in ethanol.arrow_forwardSynthesize 2-Ethyl-3-methyloxirane from dimethyl(propyl)sulfonium iodide using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardSynthesize 2-Hydroxy-2-phenylacetonitrile from phenylmethanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forward
- Synthesize N-Methylcyclohexylamine from cyclohexanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardSynthesize N-Methylcyclohexylamine from cyclohexanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardIf possible, please provide the formula of the compound 3,3-dimethylbut-2-enal.arrow_forward
- Synthesize 1,4-dibromobenzene from acetanilide (N-phenylacetamide) using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardIndicate the products obtained by mixing (3-oxo-3-phenylpropyl)triphenylphosphonium bromide with sodium hydride.arrow_forwardWe mix N-ethyl-2-hexanamine with excess methyl iodide and followed by heating with aqueous Ag2O. Indicate the major products obtained.arrow_forward
- Indicate the products obtained by mixing acetophenone with iodine and NaOH.arrow_forwardIndicate the products obtained by mixing 2-Propanone and ethyllithium and performing a subsequent acid hydrolysis.arrow_forwardIndicate the products obtained if (E)-2-butenal and 3-oxo-butanenitrile are mixed with sodium ethoxide in ethanol.arrow_forward
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