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प्रश्न
Assertion (A): Melting point and boiling point of ethanol are lower than that of sodium chloride.
Reason (R): The forces of attraction between the molecules of ionic compounds are very strong.
पर्याय
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A).
Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.
उत्तर
Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of (A).
Explanation:
Ethanol's melting and boiling points are lower than those of sodium chloride. This is true because sodium chloride is an ionic component, whereas ethanol is a covalent substance. Because covalent compounds have weaker intermolecular interactions than ionic compounds, the bonds holding the molecules together can be broken with less force. As a result, compared to ionic compounds, covalent compounds typically have lower melting and boiling temperatures.
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संबंधित प्रश्न
Why covalent compounds are different from ionic compounds?
State the reason why carbon can neither form \[\ce{C^4+}\] cations nor \[\ce{C^4−}\] anions but forms covalent compound.
Name the black substance of pencil. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit?
What type of bonds are present in methane (CH4) and sodium chloride (NaCl)?
One of the following is not an allotrope of carbon. This is:
(a) diamond
(b) graphite
(c) cumene
(d) buckministerfullerene
What is the difference between ionic compounds and polar covalent compounds?
Define a coordinate bond and give the conditions for its formation.
Draw all possile structural formulae of compound from their molecular formula given below.
C3H4
Explain the following:
Non-polar covalent compounds are insoluble in water.
Fill in the blank with correct word from the bracket.
Melting and boiling points of covalent compounds are generally ______ (low, high).
Compare the compounds carbon tetrachloride and sodium chloride with regard to solubility in water and electrical conductivity.
Draw an electron dot diagram to show the formation of the following compound.
Methane
State the type of bond formed when the combining atom has zero E.N. difference.
State the type of bond formed, and draw Lewis structure of water.
Explain the following:
Polar covalent compounds conduct electricity?
The bond between two oxygen atoms is _______ bond.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
List two differences between the properties exhibited by covalent compounds and ionic compounds.
`"CH"_3 - "CH"_2 - "OH" overset("Alkaline""KMnO"_4 + "Heat")(->) "CH"_3 - "COOH"`
In the above given reaction, alkaline KMnO4 acts as
