CHE005: LAS 5 Solubility and Organic Compounds Quiz

Which principle best explains solubility of organic compounds?

• Mass action law

• Like dissolves like

• Raoult’s law

• Boyle’s law

Which solute is soluble in distilled water but insoluble in hexane?

• Benzene

• Glucose

• Toluene

• Benzoic acid

Which solute is miscible with both water and hexane?

• Benzene

• Aniline

• Ethanol

• Benzoic acid

Benzene and toluene in water form what type of mixture?

• Homogeneous

• Heterogeneous

• Colloidal

• Miscible

Which factor significantly increases solubility of solids in water?

• High pressure

• Increased temperature

• Addition of inert gas

• Reduced stirring

Which functional group increases water solubility due to hydrogen bonding?

• Hydroxyl (–OH)

• Alkyl (–R)

• Phenyl (–C₆H₅)

• Halogen (–Cl)

Which compound is immiscible in water but miscible in hexane?

• Glucose

• Ethanol

• Benzene

• Aniline

Cosmetics are defined as substances intended mainly for:

• Treating diseases

• Cleaning, perfuming, or changing body appearance

• Producing energy in the body

• Acting as nutritional supplements

Why is it important to identify compounds as organic or inorganic in products?

• To classify them by color

• To understand their chemical properties and applications

• To arrange them by molecular weight

• To distinguish natural from artificial

Which of the following is an inorganic compound commonly found in products?

• Acetic acid

• Naphthalene

• Magnesium sulfate

• Formaldehyde