“\"Chlor-alkali exam questions\" [010] activity post – please hide your replies

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This post was last edited by sunjl1981 on 2013-1-6 at 22:41. To encourage active participation from members, 3 wealth points are given for each correct answer; if a calculation process is provided, or if a valid 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 progressing together. (Note: Only moderator ratings are valid for this post; other ratings are invalid.) Multiple-choice questions: 1. The pole distance in an ion-exchange membrane electrolyzer can be adjusted. At a current density of 4 kA/m2, a change of 1 mm in the pole distance will cause the cell voltage to change by ( ) A. 30–50 mV B. 30–100 mV C. 50–100 mV D. 20–35 mV 2. What has the most significant impact on the ion-exchange membrane during production? It causes the cell voltage to rise and reduces current efficiency. A. Fe B. Ca and Mg C. Ba D. Hg 3. The acid added to the anode solution in an ion-exchange membrane electrolyzer should not be used in excessive amounts, nor should it be applied unevenly. The pH value of the anode solution must be kept above ( ). A. 1 B. 2 C. 3 D. 4 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! Answer key: 1.A 2.B 3.B # hcbbs