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1. |
__________ (5% on wood) is used usually after the addition of magnesium ion. The mechanism for inactivating the ions by __________ precipitating the ions, but, strictly speaking, it is not a chelating agent? |
A. | Sodium disulfate |
B. | Sodium peroxide |
C. | Sodium silicate |
D. | Sodium hydroxide |
Answer» D. Sodium hydroxide | |