26 Which substance is an electrolyte?(1) C6H12O6(s) (3) NaOH(s)(2) C2H5OH(L) (4) H2(g)
2 answers:
Answer: Option (3) is the correct answer.
Explanation:
When a compound dissolved in solution dissociates into ions then the solution is able to conduct electricity is known as an electrolyte.
This means that ionic molecules are able to conduct electricity because they are able to dissociate into ions.
Thus, we can see that out of the given options NaOH is ionic in nature hence, it is an electrolyte.
Whereas ,
, and
are not ionic in nature therefore, they are not electrolyte.
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Visual representation of covalent bonding indicating the valence shell electrons in the molecule, lines represents the shared pair of electron and pair of electrons that are not involved in bonding are represented as dots(lone pairs) are known as Lewis structures.
Compound formation takes place in order to complete the octet of each element that is according to octet rule, each atom forms bond with other atom in order to complete their octet that is to get eight electrons in its valence shell and attain stability.
An organic compound of the form is known as ketene.
The given ketene is .
The number of valence electron of:
The number of valence electrons in =
2 electrons are involved in each single bond between carbon and hydrogen and 4 electrons are involved in each double bond formed between carbon-carbon and carbon-oxygen. Hence, the total number of electrons involved in bond formation are 12 and rest 2 pair of electrons are present on oxygen as lone pair of electrons.
Therefore, the attached image is the Lewis structure of .
Answer: It is non-spontaneous at all T.
Explanation:
According to Gibb's equation:
= Gibbs free energy = +ve
= enthalpy change = +ve
= entropy change = -ve
T = temperature in Kelvin
= +ve, reaction is non spontaneous
= -ve, reaction is spontaneous
= 0, reaction is in equilibrium
Putting in the values:
Reaction is non spontaneous at all temperatures.