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What is the theoretical van't Hoff factor (i) for the following compounds?

A) Ca(OH)₂​
B) CH3₃OH

1 Answer

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Final answer:

The theoretical van't Hoff factor is 3 for Ca(OH)2, as it dissociates into three ions, and 1 for CH3OH, which does not dissociate into ions.

Step-by-step explanation:

The theoretical van't Hoff factor (i) for a compound represents the number of particles into which a compound dissociates when it dissolves. For Ca(OH)₂, it dissociates into three ions: one Ca²⁺ and two OH⁻ ions, so its theoretical van't Hoff factor is 3.

The compound CH₃OH (methanol) does not dissociate into ions in solution; therefore, its theoretical van't Hoff factor is 1. Note that these are ideal values and real measurements can differ.

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