Question

Write a balanced chemical equation to represent the industrial process where elemental boron is produced by heating diboron trioxide with magnesium metal.

A) B2O3 + 3Mg → 2B + 3MgO
B) 2B2O3 + 3Mg → 4B + 3MgO
C) B2O3 + 2Mg → B2Mg2O4
D) B2O3 + Mg → B2MgO4. Provide a piece of evidence that a chemical reaction occurred during the production of elemental boron from diboron trioxide and magnesium metal.
A) Change in Color
B) Change in Mass
C) Change in Density
D) Change in Shape

Answer 1

The correct balanced chemical equation for the production of elemental boron by heating diboron trioxide with magnesium metal is B2O3 + 3Mg → 2B + 3MgO, and evidence of this chemical reaction can include a change in color.

Step-by-step explanation:

The balanced chemical equation to represent the industrial process where elemental boron is produced by heating diboron trioxide with magnesium metal is:

B2O3 + 3Mg → 2B + 3MgO

Evidence that a chemical reaction occurred during the production of elemental boron from diboron trioxide and magnesium metal includes a change in color, which is a common sign of a chemical change. The reaction of boric oxide with magnesium powder forms brown, amorphous boron powder, indicating a change has taken place.