From your general experiences, would you select water or gasoline to try dissolv

Question

From your general experiences, would you select water or gasoline to try dissolving the following a. tabie sugar (sucrose), used to satisfy your sweet tooth b. table salt (sodium chloride), thrown over your shouider for good luck! c. motor oil that has dripped from your automobile onto the garage floor d. road tar on the side of your automobile e. ferilizer that has spilied from an overturned truck f rubber from the tire marks left on your driveway g. blood from a "squished" mosquito h. adhesive from a pricing sticker that adheres to a glass vase easured density 2. ent's liquid unknown boils at approximately 65°C and is soluble in water and ethanol. Its m 0.80 g/mL. Which substance in Table 2.1 is the student's unknown?

Explanation / Answer

1. table sugar - water

2. table salt - water

3. motor oil - gasoline

4. road tar - gasoline

5. fertilizer - water

6. rubber - gasoline

7. blood - water

8. adhesive - gasoline

Reason: polar compounds are soluble in polar compounds and non-polar compounds are soluble in nonpolar compounds. water is a polar molecule and gasoline is a nonpolar molecule.

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