Calculate the molarity of a solution containing 0.875moles of glucose in 1.5kg of water.

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07-02-2021
Chemistry

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Calculate the molarity of a solution containing 0.875moles of glucose in 1.5kg of water.

Sagot :

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(1.5p²y+py) (1.5p²y + p²y²)

dvnl dvnl · Answer 1 · 2021-02-07T20:36:02-05:00

molarity = moles of solute/liters of solution

We know the moles of solute: 0.875 moles of glucose. We can easily determine the liters of solution by using the mass of water given (1.5 kg) and the density of water (approximately 1 kg/L): they're, for all intents and purposes, equal (the approximation isn't large enough to be appreciable here, nor would the volume of the solution appreciably change since the solute is a solid that will dissolve into the solvent). So, we have 1.5 L of solution.

Now, we plug in what we have:

molarity = 0.875 moles of glucose/1.5 L of solution = 0.58 M glucose

The answer is provided to two significant figures since we're given the mass of water to two significant figures.

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