# Problem: The freezing point of benzene is 5.5°C. The freezing point depression constant for benzene is Kf = 4.3°C m-1. How much of Naphthalene  (C10H8) must be dissolved in 500g of benzene, to lower the freezing point to 4.5°C? 1. 68.8g 2. 29.7g 3. 14.9g 4. 2.97g

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The freezing point of benzene is 5.5°C. The freezing point depression constant for benzene is Kf = 4.3°C m-1. How much of Naphthalene  (C10H8) must be dissolved in 500g of benzene, to lower the freezing point to 4.5°C?

1. 68.8g
2. 29.7g
3. 14.9g
4. 2.97g

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Freezing Point Depression concept. If you need more Freezing Point Depression practice, you can also practice Freezing Point Depression practice problems.

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Based on our data, we think this problem is relevant for Professor Ayers' class at Colorado Mesa University.