【Daily Question】Chemical Production Management 2020.4.29
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Multiple-choice question: To produce NaOH by electrolysis, it is necessary to remove Ca2+ and Mg2+ from the salt solution; what needs to be added to the salt solution? A. Na2SO4 B. NaOH and soda ash C. NaHCO3 and soda ash D. BaCl2 Answer: B. NaOH and soda ash
To produce NaOH by electrolysis, it is necessary to remove Ca2+ and Mg2+ from the salt solution; therefore, (B. NaOH and soda ash) need to be added to the salt solution.