QQuestionChemistry
QuestionChemistry
Draw the Lewis structure of CH^3OH (methanol), a neutral compound. Draw the Lewis dot structure of CH^3OH.
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Answer
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Step 1:: Identify the total number of valence electrons in the molecule
The Lewis structure of a molecule requires determining the total number of valence electrons. Methanol (CH^3OH) is a neutral compound made up of carbon, hydrogen, and oxygen atoms. The number of valence electrons for each atom is as follows: - Carbon (C): 4 valence electrons - Hydrogen (H): 1 valence electron - Oxygen (O): 6 valence electrons There are 1 carbon atom, 3 hydrogen atoms, and 1 oxygen atom in methanol. So the total number of valence electrons in CH^3OH is: Total valence electrons = (4 * 1) + (1 * 3) + (6 * 1) = 4 + 3 + 6 = 13
Step 2:: Place the atoms in the Lewis structure
Place the atoms in the structure, starting with the central atom. In this case, carbon is the central atom, so arrange the hydrogens and oxygen around the carbon atom: H-C-OH
Step 3:: Distribute the remaining valence electrons as dots around each atom
Add the remaining valence electrons to the structure as dots around each atom. Each line represents a pair of shared electrons, and each hydrogen atom has one electron (one dot): H : C : OH 13 electrons left H : C : O : H 11 electrons left H : C — O : H 9 electrons left
Step 4:: Satisfy the octet rule for each atom (except hydrogen)
To satisfy the octet rule, move electrons to form bonds and share them between atoms. Each line represents a pair of shared electrons. In this case, move one electron from the oxygen atom to form a double bond with the carbon atom: H : C = O : H
Step 5:: Ensure all atoms have a complete octet (except hydrogen)
Now, all atoms (except hydrogen) have a complete octet: H : C = O : H
Step 6:: Count the total number of electrons in the structure
The total number of electrons in the Lewis structure should be equal to the total number of valence electrons calculated in Step 1: H : C = O : H 4 electrons (bonds) + 6 electrons (dots on C) + 4 electrons (dots on O) + 4 electrons (dots on H) = 18 electrons
Step 7:: Draw the final Lewis structure
The final Lewis structure of CH^3OH (methanol) is: H : C = O : H
Final Answer
The Lewis structure of CH^3OH is: H : C = O : H
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