Nomenclature, formula writing, and chemical equations: Calcium flouride + sulfuric acod ---> ? (Use chemical name and solve)Show complete solution and explain the answer

2 Answers

sanjeetmanna's profile pic

sanjeetmanna | College Teacher | (Level 3) Assistant Educator

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Calcium fluoride + sulfuric acid → Hydrogen fluoride + Calcium sulfate

calcium fluoride = CaF2

Sulfuric acid = H2SO4

hydrogen fluoride = HF

calcium sulfate = CaSO4


stoichiometric reaction...

CaF2 + H2SO4 → HF + CaSO4

Balanced chemical reaction

CaF2 + H2SO4 → 2 HF + CaSO4

For nomenclature please refer the following link which will include formula writing also.

For writing equation, it depend upon the oxidation state of the element.

The above reaction is double displacement reaction.

Compounds with there oxidation states

CaF2 = Ca^+2, F^-1.

H2SO4 = 2H^+, SO4^2-

CaSO4 = Ca^+2, SO4^2-

HF = H^+, F^-.

Depending upon the oxidation state the shuffling of the element takes place.

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cgrant2 | High School Teacher | (Level 1) Valedictorian

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The formula is CaF2 + H2SO4 ---> CaSO4 + 2HF 

The products are hydrogen fluoride (HF) and Calcium sulfide (CaSO4) The equation is balance above. 

Ca = 1

F = 2 

H = 2 

SO4 = 1