Use the electronegativity and valence electron information in the table to answer the question.

Question

Element Valence Electrons Electronegativity
Hydrogen 1 2.2
Carbon 4 2.55
Oxygen 6 3.44
Chemical weathering over hundreds of thousands of years formed modern caves. One form of chemical weathering occurs when carbon dioxide reacts with water to produce carbonic acid ( H2CO3
). How many bonds formed in H2CO3
?

(1 point)
Responses

six
six

three
three

eight
eight

five

Answer 1

To determine how many bonds are formed in carbonic acid (H2CO3), we can analyze its structure.

Carbonic acid consists of:

• 1 carbon atom (C)
• 2 oxygen atoms (O)
• 2 hydrogen atoms (H)

The structure can be represented as follows:

• The carbon atom is the central atom and forms 4 total bonds.
  • It forms 2 single bonds with the 2 hydrogen atoms.
  • It forms 2 double bonds with the 2 oxygen atoms (one of which also carries a hydrogen as part of the COOH functional group).

Now let's count the total number of bonds:

• 2 (C-H bonds) + 2 (C=O bonds) = 4 bonds.

Thus, the correct answer for the number of bonds formed in H2CO3 (carbonic acid) is four. However, the options you provided suggest a misunderstanding of the options or a different counting method. None of the provided choices (six, three, eight, five) match the correct calculation of 4.

If we're strictly required to select from the provided options and considering standard chemical interpretations without detailed context from the table, the analysis suggests there is a need for reevaluation of the options listed or their meanings.

In conclusion: 4 bonds in total are formed in H2CO3, which isn’t directly represented in your options. Please check for clarity or potentially provide additional context or information relevant.