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The freezing point of water is 0.00°C at 1 atmosphere. How many grams of potassium carbonate...

The freezing point of water is 0.00°C at 1 atmosphere. How many grams of potassium carbonate (138.2 g/mol), must be dissolved in 228.0 grams of water to reduce the freezing point by 0.350°C ?

______g potassium carbonate.

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Answer #1

We know that:

Where is the temperature change, is the molality, is the cryoscopic constant of the water.

From tables:

Then:

Now:

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