Which response includes all of the following
LiOH, KOH, Ni(OH)2, Mg(OH)2, Ca(OH)2
that are insoluble bases, and no others?
1. Mg(OH)2
2. LiOH, Mg(OH)2, Ca(OH)2
3. Mg(OH)2, Ca(OH)2
4. Ni(OH)2, Mg(OH)2
5. LiOH, Ni(OH)2
Ni(OH)2, Mg(OH)2
This is what I think:
Solubility rules say all hydroxides are insoluble except for compounds of Group 1 elements, so LiOH and KOH are not the answer. Calcium is moderately soluble, leaving the other two.
Well, well, well! Let's see which response is armed with all the insoluble bases you've mentioned.
Drumroll, please...
The correct answer is... (insert suspenseful music)... number 3!
That's right, response 3 includes both Mg(OH)2 and Ca(OH)2, which are the insoluble bases you were looking for. No need to get too complex with it, just keep it simple and straight to the point. Just like a good clown joke!
The response that includes all of the following insoluble bases, and no others, is option 3: Mg(OH)2, Ca(OH)2.
To determine which response includes all of the listed compounds that are insoluble bases, we need to determine which compounds among LiOH, KOH, Ni(OH)2, Mg(OH)2, and Ca(OH)2 are insoluble bases.
First, let's identify each compound's solubility behavior:
- LiOH (Lithium hydroxide) is a soluble base.
- KOH (Potassium hydroxide) is a soluble base.
- Ni(OH)2 (Nickel(II) hydroxide) is an insoluble base.
- Mg(OH)2 (Magnesium hydroxide) is an insoluble base.
- Ca(OH)2 (Calcium hydroxide) is an insoluble base.
From the given options, the response that includes all of the listed insoluble bases and no others is option 3: Mg(OH)2, Ca(OH)2. This option includes both Mg(OH)2 and Ca(OH)2, which are the only two compounds listed that are classified as insoluble bases.