[Soda Ash Knowledge] Question of the Day (27) October 30, 2009
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Please hide replies; otherwise, no scoring will be given in principle. Specific hiding method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 Edited posts are not rated. (The questions in this issue are taken from page 67 of \"Technical Worker Training Question Bank – Soda Ash Production Operators.\" An electronic version of this book is available for download at the soda ash information sharing site: http://bbs.hcbbs.com/thread-13140-1-2.html) Fill-in-the-blank questions: 1. The solubility of ammonium chloride decreases significantly as the temperature drops; meanwhile, the solubility of sodium chloride ( ). 2. The mother liquor after cold crystallization is called ( ). 3. Adding ( ) to semi-mother liquor II causes ( ) to crystallize out due to the common-ion effect. This process is called ( ). 4. The salting-out crystallization process not only produced ( ), but also increased the concentration of ( ) in MII, thus creating conditions for ( ).
1. Decrease, increase 2. Semi-mother liquor II 3. Sodium chloride, ammonium chloride, salting-out crystallization 4. Ammonium chloride, sodium chloride, alkali production
1. Decrease Increase 2. Semi-mother liquor II 3. Sodium chloride Ammonium chloride Salting-out crystallization 4. Ammonium chloride Sodium chloride Alkali production
1. Decrease, increase 2. Semi-mother liquor II: sodium chloride, ammonium chloride; salting-out crystallization 4. Ammonium chloride, sodium chloride; alkali production
1 Decrease Increase 2 Semi-mother liquor II 3 Sodium chloride Ammonium chloride Salting-out crystallization 4 Ammonium chloride Sodium chloride Alkali production
1 Reduce, increase. 2 Semi-mother liquor II 3 Sodium chloride, ammonium chloride, salting-out crystallization 4 Ammonium chloride, sodium chloride, alkali production
1. The solubility of ammonium chloride decreases significantly as the temperature drops, while the solubility of sodium chloride increases accordingly. 2. The mother liquor after cold crystallization is called (semi-MⅡ). 3. Sodium chloride is added to the semi-mother liquor II; due to the common-ion effect, ammonium chloride crystallizes out. This process is known as “salting-out crystallization”. 4. The salting-out crystallization process not only produced (ammonium chloride), but also increased the concentration of (sodium chloride) in MII, thus preparing the conditions for (alkali production).
1. The solubility of ammonium chloride decreases significantly as the temperature drops, while the solubility of sodium chloride increases accordingly. 2. The mother liquor after cold crystallization is referred to as “semi-mother liquor II”. 3. Sodium chloride is added to semi-mother liquor II; due to the common ion effect, ammonium chloride crystallizes out. This process is known as “salting-out crystallization”. 4. The salting-out crystallization process not only produced (ammonium chloride), but also increased the concentration of (sodium chloride) in MII, thus creating conditions for (alkali production).
1. The solubility of ammonium chloride decreases significantly as the temperature drops, while the solubility of sodium chloride increases accordingly. 2. The mother liquor after cold crystallization is referred to as “semi-mother liquor II”. 3. Sodium chloride is added to semi-mother liquor II; due to the common ion effect, ammonium chloride crystallizes out. This process is known as “salting-out crystallization”. 4. The salting-out crystallization process not only produced (ammonium chloride), but also increased the concentration of (sodium chloride) in MII, thus creating conditions for (alkali production).
1. The solubility of ammonium chloride decreases significantly as the temperature drops, while the solubility of sodium chloride (increases) accordingly. 2. The mother liquor after cold crystallization is referred to as (semi-mother liquor II). 3. Sodium chloride is added to the semi-mother liquor II; due to the common-ion effect, ammonium chloride crystallizes out. This process is known as “salting-out crystallization”. 4. The salting-out crystallization process not only produced (ammonium chloride), but also increased the concentration of (sodium chloride) in MII, thus creating conditions for (alkali production).
Decrease Increase Semi-mother liquor II Sodium chloride Ammonium chloride Salting-out crystallization