This chemical equation represents the reaction of hydrogen burning. 2H2 + O2 = 2H2O complete the sentence to describe what is happening in this chemical reaction.  "Hydrogen reacts with..."

Expert Answers

An illustration of the letter 'A' in a speech bubbles

For the given reaction of hydrogen burning, we can complete the sentence as:

Hydrogen reacts with oxygen to produce water. 

To be more precise, 2 moles of hydrogen reacts with 1 mole of oxygen and yields 2 moles of water. An important aspect to note here, hydrogen and oxygen are...

Unlock
This Answer Now

Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.

Start your 48-Hour Free Trial

For the given reaction of hydrogen burning, we can complete the sentence as:

Hydrogen reacts with oxygen to produce water. 

To be more precise, 2 moles of hydrogen reacts with 1 mole of oxygen and yields 2 moles of water. An important aspect to note here, hydrogen and oxygen are both gases, while water is a liquid. So not only are we getting a new product, there is phase change as well and 2 gaseous reactant combine to yield a liquid product. This reaction generate a polar molecule, in which covalently bonded hydrogen and oxygen share electrons. Since oxygen is much more electronegative as compared to hydrogen, the shared pair of electrons are actually very close to the oxygen molecule, making it a polar molecule (positive and negative charge centers separated by some distance).

Hope this helps.

Approved by eNotes Editorial Team