The (approximate) van't Hoff factor
The (approximate) van't Hoff factor
The (approximate) van't Hoff factor
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<strong>The</strong> van’t <strong>Hoff</strong> <strong>factor</strong>This <strong>factor</strong> of 2 for NaCl is the (<strong>approximate</strong>) van’t <strong>Hoff</strong> <strong>factor</strong>.This <strong>factor</strong>, given the symbol “i ”, is greater than 1 for allstrong electrolytes.i for NaCl = 2 Why? Because NaClConsider other electrolytes:H 2ONa + + Cl i for HCl = 2HCl is a strong acid: HCl + H 2 O H 3 O + + Cli for NaOH = 2 NaOH is strong base: NaOHH 2ONa + + OH i for Ca(OH) 2 = 3 a strong base: Ca(OH) 2H 2OCa 2+ + 2OH
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