Question

Chemistry

How many Fluorine ions are there in 202 grams of CaF2
HINT: Find the percentage of Fluorine in Calcium Fluoride, then find out how many grams of fluorine are in 200 grams of Calcium Fluoride. Lastly solve for ions

Answer 1

There are 48.72 g Fluorine ions

Further explanation

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

In the same compound, although from different sources and formed by different processes, it will still have the same composition/comparison

%F in CaF₂ :

`\tt \%F=(2.Ar~F)/(MW~CaF_2)* 100\%\\\\\%F=(2.19)/(78)* 100\5=48.72\%`

mass of Fluorine :

`\tt 48.72\%* 200=97.44~g`

So mass Fluorine ions(2 ions F in CaF₂⇒Ca²⁺+2F⁻) :

`\tt =(97.44)/(2)=48.72~g`