What is the percentage #"ammonium"# content in #"ammonium dichromate"#?

1 Answer
anor277
Jan 27, 2017

In #(NH_4)_2Cr_2O_7#............?

Explanation:

The molecular mass of #"ammonium dichromate"# is #252.07*g*mol^-1#. We nominate the #NH_4^+# unit as the cation. This has a mass of #18.04*g*mol^-1#.

And thus percentage of cation by mass is:

#(2xx18.04*g*mol^-1)/(252.07*g*mol^-1)xx100%~=14%.#

What is the percentage by mass of metal?

Related questions
See all questions in Percent Composition
Impact of this question
1395 views around the world
You can reuse this answer
Creative Commons License