You find two bottles of white solid on a shelf in the stock room without labels....

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Chemistry

You find two bottles of white solid on a shelf in the stock roomwithout labels. You then find two labels CaCl2 (s) and KCl (s0lyring right beside. You want to determine which is which. Thesolids can be differentiated by dissolving each solid in water andmeasuring the change in temperature.
delta H(f) CaCl2 (s) = -796kJ/molÂ Â Â Â Â
delta H(f) KCl (s) = -437kJ/molÂ Â Â Â Â Â Â Â Â
You dissolve 0.100 moles of unknown A in enough water to make a200g solution at 22 degress C. The final temperature of the systemis 31.7 degress C. Which solid is unknownA?Â Â Â Â Â Â Â Â Â
What would be the expected Final Temperature if you dissolved0.100 moles of unknown B in enough water to make a 200g solution at22 degreesC?Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
Draw an enthalpy diagram for the dissolution of unknown B, besure to include reactants, products, enthalpy, delta H, reactionprogress.

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4.3 Ratings (556 Votes)

The process of dissolving a substance in water is calleddissolution and usually its an exothermic process because energyis released when weak bonds of the substance are broken apart intoits See Answer

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