MDCAT Chemistry MCQ #5405

An artist wishes to etch a design onto a glass surface. Which halogen acid must be used due to its unique reactivity with silicates?

MDCAT Chemistry MCQ #5405

  1. Question 1

    Q1. An artist wishes to etch a design onto a glass surface. Which halogen acid must be used due to its unique reactivity with silicates?

    • A) Hydrochloric acid
    • B) Hydrobromic acid
    • C) Hydrofluoric acid
    • D) Hydriodic acid

    Answer: Hydrofluoric acid

    Explanation: HF reacts with silicates in glass to form soluble Na2SiF6 or SiF4; HCl is tempting but cannot break the Si-O bonds.