Short answerEasy1 mark
7(ii)
Bauxite is the principal ore used in the commercial extraction of aluminium. The Bayer's process is used to refine bauxite into pure alumina, with caustic soda playing a crucial role in the initial stage of the process. Based on this, answer the following questions:
Write a balanced chemical equation representing the reaction between bauxite and caustic soda during the Bayer's process.
Topic: Metallurgy, ores, extraction and alloys
Previous-year question practice database
Answer
Exam answer
Al₂O₃·2H₂O + 2NaOH → 2NaAlO₂ + 3H₂O.