“\"Chlor-alkali exam questions\" [011] activity post – please hide your replies
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This post was last edited by sunjl1981 on 2013-1-6 at 22:20. To encourage active participation from members, 3 wealth points are given for each correct answer; if a calculation process is provided, or if a proper reason is given, an additional reward of 3 to 6 wealth points is awarded. I believe it’s not about the quantity, but having a reward is enough. The key is everyone’s active participation and mutual progress. (Note: Only moderator ratings are valid for this post; other ratings are invalid.) Multiple-choice questions: 1. The current density in modern bipolar ion-exchange membrane electrolysis is generally ( ) A. 3–6 kA/m2 B. 0.1–2 kA/m2 C. 0.5–1 kA/m2 D. 10 kA/m2 2. The sodium hydroxide content in brine required for production should be ≤ ( ) A. 0.4 g/L B. 4 g/L C. 0.1 g/L D. 1 g/L 3. The concentration of the alkali solution used in most modern bipolar ion-exchange membrane electrolyses is generally controlled at ( ) A. 10% B. 20% C. 32% D. 50% Please hide your replies; ratings will not be given unless replies are hidden. For instructions on how to hide replies, click here: Hiding method. Answer using the same IP; only the first post is valid. Also, be careful when posting; edits are invalid! Thank you all! Reference answers: 1. A 2. A 3. C # chhbbs
1. The current density in modern polarized ion membrane electrolysis is generally ( A ) A. 3–6 kA/m2 B. 0.1–2 kA/m2 C. 0.5–1 kA/m2 D. 10 kA/m2 2. The required level of sodium hydroxide in the brine used in production is ≤ ( A ) A. 0.4 g/L B. 4 g/L C. 0.1 g/L D. 1 g/L 3. In most modern polarized ion membrane electrolyses, the concentration of the alkali solution used is generally controlled at ( B ) A. 10% B. 20% C. 32% D. 50%
1,B;2,A;3,C.