s the substance being dissolved in a solution. a) Solute b) Solvent c) Substrate
ID: 146521 • Letter: S
Question
s the substance being dissolved in a solution. a) Solute b) Solvent c) Substrate d) Insolvent 4) Nonpolar molecules are usually a) Hydrophobic b) Hydrophilic c) lonic d) Equatorial 5) Which of the following correctly defines a buffer? a) A solution that resists changes in pH when an acid is added b) A solution that resists changes in pH when a base is added c) A solution that allows changes in pH when an acid or a base is added d) A solution that resists changes in pH when an acid or a base is added 6) A solution is considered to be basic if it has which of the following set of properties a)Low concentration of H+ ions, has a pH value of 1 to 6 b) Low concentration of OH- ions, has a pH value of 1 to 6 c) High concentration of H+ ions, has a pH value of 8 to 14 d) High concentration of OH- ions, has a pH value of 8 to 14Explanation / Answer
Please find the answers below:
Answer 3: Choice a (solute is dissolved in a solvent to make a solution)
Answer 4: Choice b (non-polar molecules do not have distribution of charge over their atoms, hence fail to make hydrogen bond with water and hence are insoluble in water)
Answer 5: Choice d (a buffered solution is the one which does not undergo change in pH even when an acid or a base is added to it)
Answer 6: Choice d (a pH range of 8-14, low concentration of hydrogen ions and high concentration of hydroxyl ions make a base)
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