pentoxide

9.9

A chemical made of five oxygen atoms joined to another element

noun
/ˈpɛntɒksaɪd/

Specialized

: pentóxido

In organic chemistry, understanding the behavior of nitrogen pentoxide is essential for students.

Examples

And when you dissolve phosphorus pentoxide, you make phosphoric acid.
Well, it is made by dissolving phosphorus pentoxide in water.
Arsenic pentoxide became the poison of choice, but it was expensive.

Academic text (1992)
The sale and transportation of arsenic pentoxide continued to be heavily subsidized by the Queensland government.

Academic text (1992)
Superfund Program: Extremely Hazardous Substance List: EPA recommended deleting phosphorous pentoxide, diethylcarbamazine citrate, fenitrothion, and tellurium from the extremely hazardous substance list.

Academic text (2006)
Arsenic pentoxide is often used in laboratory settings due to its unique chemical properties.
Phosphorus pentoxide is a key component in producing phosphoric acid for various industrial applications.

Compounds

vanadium pentoxide

Specialized

7.9

A yellow-red solid used to speed chemical reactions and make other vanadium chemicals

Surface Forms

pentoxide singular

pentoxides plural

Morphology

pentoxide = oxide (semi-transparent) = pent + oxide

Formed by the regular combining form 'pent-' plus the chemistry noun 'oxide', but 'pent-' is a technical Greek combining form not fully familiar to average learners and 'oxide' is a specialized term.

Etymology

The word pentoxide combines pent- meaning 'five' and oxide showing 'oxygen', the gas we breathe. So, pentoxide is a chemical with five oxygen atoms joined to another element.