Which of the following chemical compounds has the highest boiling point? Dimethy

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Question
Which of the following chemical compounds has the highest boiling point?
Options
A. Dimethyl ether (CH3OCH3)
B. Methanol (CH3OH)
C. Methane (CH4)
D. None

Correct Answer

Methanol (CH3OH)

Explanation

Chemical Compounds with stronger intermolecular forces have higher boiling points.

The order of strengths of intermolecular forces is:

London dispersion < dipole-dipole < H-bonding

${Methane (CH}_{4)}$ ? London dispersion forces

${Dimethyl ether (CH}_{3} {OCH}_{3)}$ ? dipole-dipole attractions

${Methanol (CH}_{3} OH)$ ? hydrogen bonding

Therefore, ${Methanol -}$ ${CH}_{3} OH$ $with H-Bonding have highest Boiling Point among the given chemical compounds.$

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Chemistry problems

Search Results

1. What are the Monomers that make up Proteins?
Options
A. Amino acids
B. Nucleotides
C. Disaccharides
D. Chaperones

2. How does molecular shape affect polarity?

4. PAS is a drug used in the treatment of
Options
A. Cancer
B. Typhoid
C. Malaria
D. Tuberculosis

5. which of the following are chemical changes? A) Cooking of Food B) Digestion of Food C) Freezing of water D) Water is heated up
Options
A. A & B
B. A, B & C
C. C & D
D. All the above

6. The degree of dissociation ( ? ) of a weak electrolyte, AxBy is related to van't Hoff factor (i) by the expression: 1. ?=x+y+1i-1 2.?=x+y-1i-1 3. ?=i-1x+y+1 4. ?=i-1x+y-1
Options
A. 1 is correct
B. 2 is correct
C. 3 is correct
D. 4 is correct

Correct Answer: 4 is correct

Explanation:

Van't Hoff factor (i) = $\frac{O b s e r v e d C o l l i g a t i v e P r o p e r t y}{N o r m a l C o l l i g a t i v e P r o p e r t y}$

$\begin{matrix} A_{x} B_{y} \\ 1 - ? \end{matrix} ? \begin{matrix} x A^{+ y} \\ x ? \end{matrix} + \begin{matrix} y B^{- x} \\ y ? \end{matrix}$

Total Moles = $1 - ? + x ? + y ?$ = $1 - ? (x + y - 1)$

$i = \frac{1 + ? (x + y - 1)}{1}$

$? ? = \frac{i - 1}{x + y - 1}$

7. Which statement is NOT true about polymers?
Options
A. Polymers are large molecules composed of small monomeric units
B. Polymes are macromolecules
C. Polymers are complex molecules composed of random sequences of atoms
D. All the above

8. Which of these relationships is true of an uncharged atom?
Options
A. The atomic mass is equal to the atomic number.
B. The number of electrons is equal to the number of neutrons.
C. The number of protons is equal to the number of electrons.
D. The atomic mass is equal to the number of electrons.

9. Which of the following elements is a metal?
Options
A. Se
B. I
C. Zn
D. S

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