The normal freezing point of a certain liquid X is -5.90 °C, but when 43. g of zinc chloride (ZnCl,) are dissolved in 400. g of X the solution freezes at -7.2 °C instead. Use this information to calculate the molal freezing point depression constant K, of X. Be sure your answer is rounded to the correct number of significiant digits. °C•kg Oxto K, mol ?
The normal freezing point of a certain liquid X is -5.90 °C, but when 43. g of zinc chloride (ZnCl,) are dissolved in 400. g of X the solution freezes at -7.2 °C instead. Use this information to calculate the molal freezing point depression constant K, of X. Be sure your answer is rounded to the correct number of significiant digits. °C•kg Oxto K, mol ?
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11th Edition
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![The normal freezing point of a certain liquid \( X \) is \( -5.90 \, ^\circ\text{C} \), but when \( 43. \, \text{g} \) of zinc chloride (\(\text{ZnCl}_2\)) are dissolved in \( 400. \, \text{g} \) of \( X \), the solution freezes at \( -7.2 \, ^\circ\text{C} \) instead. Use this information to calculate the molal freezing point depression constant \( K_f \) of \( X \).
Be sure your answer is rounded to the correct number of significant digits.
Below this text, there is an equation box where the answer for \( K_f \) can be input:
\[ K_f = \frac{^\circ\text{C} \cdot \text{kg}}{\text{mol}} \]
Next to the equation box, there are three icons below a box labeled \( \times 10 \):
1. An eraser icon - likely for clearing any input.
2. A reset icon - possibly for returning settings to their default values or for resetting calculations.
3. A question mark icon - typically refers to help or further instructions.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4c89a721-ffa4-4f51-b0a6-c6b9b896a0b4%2F66534933-3627-423f-98a6-562be26df81c%2F6iz4xe_processed.png&w=3840&q=75)
Transcribed Image Text:The normal freezing point of a certain liquid \( X \) is \( -5.90 \, ^\circ\text{C} \), but when \( 43. \, \text{g} \) of zinc chloride (\(\text{ZnCl}_2\)) are dissolved in \( 400. \, \text{g} \) of \( X \), the solution freezes at \( -7.2 \, ^\circ\text{C} \) instead. Use this information to calculate the molal freezing point depression constant \( K_f \) of \( X \).
Be sure your answer is rounded to the correct number of significant digits.
Below this text, there is an equation box where the answer for \( K_f \) can be input:
\[ K_f = \frac{^\circ\text{C} \cdot \text{kg}}{\text{mol}} \]
Next to the equation box, there are three icons below a box labeled \( \times 10 \):
1. An eraser icon - likely for clearing any input.
2. A reset icon - possibly for returning settings to their default values or for resetting calculations.
3. A question mark icon - typically refers to help or further instructions.
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