Multiple Choice
Which of the following substances is most likely to be soluble in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which substance will most likely ionize when it is dissolved in water?
A
CH_3OH
B
NaCl
C
CO_2
D
CCl_4
Verified step by step guidance1
Understand that ionization in water refers to the process where a substance dissociates into ions when dissolved, increasing the solution's conductivity.
Identify the nature of each substance: CH\_3OH (methanol) is a molecular compound and typically does not ionize; CO\_2 is a molecular gas that dissolves but does not ionize significantly; CCl\_4 is a nonpolar molecular compound and does not ionize.
Recognize that NaCl is an ionic compound composed of Na\^+ and Cl\^- ions, which dissociates completely into these ions when dissolved in water.
Recall the general rule that ionic compounds like NaCl ionize in water, while most molecular compounds do not ionize but may dissolve as intact molecules.
Conclude that NaCl will most likely ionize in water because it is an ionic compound that dissociates into ions upon dissolution.
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