1. Which of the following describes the compound NiI 2 ? Choose all answers that
ID: 883081 • Letter: 1
Question
1. Which of the following describes the compound NiI2?
Choose all answers that apply.
The compound is ionic.
The compound would conduct electricity if molten.
The compound is molecular.
If the compound dissolved in water it would be a strong electrolyte.
The compound would be expected to have a relatively low melting point.
2. Which of the following describes the compound (NH4)2CO3?
Choose all answers that apply.
The compound would be expected to be a solid at room temperature and pressure.
If the compound dissolved in water it would be a strong electrolyte.
The compound is ionic.
The compound is molecular.
If the compound dissolved in water it would be a non-electrolyte.
3. Which of the following describes the compound SO3?
Choose all answers that apply.
The compound would be a good conductor of heat and electricity.
The compound would be expected to have a relatively high melting point.
The compound is molecular.
The compound is ionic.
The compound would be expected to have a relatively low melting point.
Explanation / Answer
NiI2
The compound is ionic. (yes)
The compound would conduct electricity if molten. (yes)
The compound is molecular. (yes)
If the compound dissolved in water it would be a strong electrolyte. (yes)
The compound would be expected to have a relatively low melting point. (wrong)
(NH4)2CO3
The compound would be expected to be a solid at room temperature and pressure. (yes )
**** above 53oC turn to liquid) and at room temperature decomposes quickly
If the compound dissolved in water it would be a strong electrolyte. (Yes)
The compound is ionic. (Yes)
The compound is molecular. (Yes)
If the compound dissolved in water it would be a non-electrolyte. (No)
SO3
The compound would be a good conductor of heat and electricity. (No)
The compound would be expected to have a relatively high melting point. (NO)
The compound is molecular. (YES)
The compound is ionic. (NO)
The compound would be expected to have a relatively low melting point. (YES)
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