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Chapter 2: Problem 10

Evaluate each of the following as an acceptable name for Water- a. dihydrogen oxide b. hydroxide hydride c. hydrogen hydroxide d. oxygen dihydride

Short Answer

Expert verified
a. Dihydrogen oxide is an acceptable name for Water, as it correctly represents the chemical formula H₂O. c. Hydrogen hydroxide can also be considered an acceptable name for Water, but it is not a standard IUPAC name.

Step by step solution

01

a. Dihydrogen oxide

Applying IUPAC naming conventions, "dihydrogen" corresponds to the presence of two hydrogen atoms (H₂), and "oxide" implies an oxygen atom (O). Therefore, dihydrogen oxide represents H₂O, which is an acceptable name for Water.
02

b. Hydroxide hydride

"Hydroxide" implies the presence of an OH- ion, which is negatively charged. "Hydride" refers to a hydrogen atom with an extra electron, which carries a negative charge (H-). Neither of these ions alone can represent water, and having both anions in a single compound is chemically impossible. So, hydroxide hydride is not an acceptable name for Water.
03

c. Hydrogen hydroxide

"Hydrogen" indicates the presence of a hydrogen atom (H), while "hydroxide" refers to the OH- ion. If we combine them neutrally, we get H + OH- → H₂O. In this sense, hydrogen hydroxide would be an acceptable name for Water. However, it is not a standard IUPAC name.
04

d. Oxygen dihydride

In this name, "oxygen" represents a single oxygen atom (O), while "dihydride" refers to two hydrogen atoms with extra electrons (2H-). As with name b, this combination of ions is chemically impossible, so oxygen dihydride is not an acceptable name for Water. In summary, the acceptable names for Water among the given options are: a. Dihydrogen oxide c. Hydrogen hydroxide (although not a standard IUPAC name)

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