Where does the negative charge come from in H2S?

In summary, the negative charge in H2S comes from the sulfur atom, which has six valence electrons. H2S is considered a polar molecule because the sulfur atom has a greater electronegativity than the hydrogen atoms, resulting in an unequal distribution of electrons and a partial negative charge on the sulfur and a partial positive charge on the hydrogen atoms. The difference between polar and nonpolar molecules lies in their distribution of electrons, with polar molecules having an unequal distribution and nonpolar molecules having an equal distribution. The electronegativity of elements affects the charge of a molecule, with the more electronegative element having a stronger pull on the shared electrons. The negative charge in H2S affects its properties, making it
  • #1
HCverma
82
2
If we split H2S we get
H2S = 2H+ + S2-
Where does the negative charge come from in H2S? Do we get 2- charge from the 2H atoms (now two protons after losing the electrons), I mean 2H+ or 2 protons get separated leaving behind the two electrons on S?
 
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  • #2
The way you write it, yes. The process of dissociation of H2S (which google) takes two steps.

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1. Where does the negative charge come from in H2S?

The negative charge in H2S comes from the sulfur atom, which has six valence electrons. When two hydrogen atoms bond with the sulfur atom, they share their electrons, leaving the sulfur atom with two additional electrons. These extra electrons give the sulfur atom a negative charge, making H2S a polar molecule.

2. Why is H2S considered a polar molecule?

H2S is considered a polar molecule because the sulfur atom has a greater electronegativity than the hydrogen atoms. This means that the sulfur atom has a stronger pull on the shared electrons, creating a partial negative charge on the sulfur and a partial positive charge on the hydrogen atoms.

3. What is the difference between a polar and nonpolar molecule?

A polar molecule has an unequal distribution of electrons, causing one side of the molecule to have a slight negative charge and the other side to have a slight positive charge. Nonpolar molecules have an equal distribution of electrons and do not have a charge. H2S is a polar molecule because of the unequal sharing of electrons between the sulfur and hydrogen atoms.

4. How does the electronegativity of elements affect the charge of a molecule?

The electronegativity of elements refers to their ability to attract electrons in a chemical bond. In a molecule, the element with a higher electronegativity will have a stronger pull on the shared electrons, creating an unequal distribution of charge. This results in a polar molecule, with the more electronegative element having a partial negative charge and the less electronegative element having a partial positive charge.

5. Does the negative charge in H2S affect its properties?

Yes, the negative charge in H2S affects its properties. The negative charge on the sulfur atom makes it more reactive, allowing it to easily bond with other molecules. The polarity of H2S also affects its physical properties, such as its boiling point and solubility in water.

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