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wlad13 [49]
3 years ago
7

Alcohols, carboxylic acids and water exhibit a very broad o—h peak between 3200-2600 cm-1. broad peaks are typically associated

with intermolecular interactions resulting in multiple bonding scenarios. what intermolecular interaction between the molecules of these three compounds might explain their broad peaks.
Chemistry
1 answer:
kramer3 years ago
6 0

Association Effects in Alcohols:

                                                  A broad peak is found in the IR spectrum of Alcohols in the range of 3500 cm⁻¹. The broadness is mainly due to special class of association effect called as hydrogen bonding. Hydrogen bonding mainly occur between the most electronegative element (F, O or N) of one molecule and the the hydrogen atom (attached to most electronegative atom) of another molecule.

Association Effects in Carboxylic Acids:

                                                               In carboxylic acids the -COOH group is responsible for the broadness of peak in IR spectrum at around 2600-3400 cm⁻¹. This broadness again results from the association effects called as dimerization in which a dimer of carboxylic acid is formed.

Association effect in Water:

                                            The association effect found in water is also due hydrogen bond interactions as that found in case of Alcohols.

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shutvik [7]

Answer : The temperature of the chloroform will be, 101.67^oF

Explanation :

First we have to calculate the mass of chloroform.

\text{Mass of chloroform}=\text{Density of chloroform}\times \text{Volume of chloroform}=1.4832g/ml\times 74.81ml=110.958g

conversion used : (1cm^3=1ml)

Now we have to calculate the temperature of the chloroform.

Formula used :

q=m\times c\times (T_{final}-T_{initial})

where,

q = amount of heat or energy = 1.46 kJ = 1460 J   (1 kJ = 1000 J)

c = specific heat capacity = 0.96J/g.K

m = mass of substance = 110.958 g

T_{final} = final temperature = ?

T_{initial} = initial temperature = 25^oC=273+25=298K

Now put all the given values in the above formula, we get:

1460J=110.958g\times 0.96J/g.K\times (T_{final}-298)K

T_{final}=311.706K

Now we have to convert the temperature from Kelvin to Fahrenheit.

The conversion used for the temperature from Kelvin to Fahrenheit is:

^oC=\frac{5}{9}\times (^oF-32)

As we know that, K=^oC+273 or, K-273=^oC

K-273=\frac{5}{9}\times (^oF-32)

K=\frac{5}{9}\times (^oF-32)+273  ...........(1)

Now put the value of temperature of Kelvin in (1), we get:

311.706K=\frac{5}{9}\times (^oF-32)+273

T_{final}=101.67^oF

Therefore, the temperature of the chloroform will be, 101.67^oF

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3 years ago
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The group of atoms that is responsible for the characteristic properties of a family of organic compounds is called a <u>functional</u> group.

Functional groups are groups of one or extra atoms with exclusive chemical homes regardless of what's connected to them. The atoms of practical agencies are certain via covalent bonds with one another and with the relaxation of the molecule.

Functional groups include:

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An atom or institution of atoms that replaces hydrogen in a natural compound that defines the shape of a family of compounds and determines the properties of the family.

Learn more about functional groups here brainly.com/question/493841

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Explanation:

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