Question

3.6. predict whether a solution has a high or low concentration of free hydrogen ions by using its ph number. egg whites solidify in the presence of acids. would lemon juice (ph 2.3) or orange juice (ph 3.5) be better for solidifying egg whites? why? orange juice, because it donates more h⁺ ions than lemon juice. lemon juice, because it donates fewer h⁺ ions than orange juice. orange juice, because it donates fewer h⁺ ions than lemon juice. lemon juice, because it donates more h⁺ ions than orange juice.

Explanation:

1. Recall the relationship between pH and hydrogen ion concentration: The lower the pH value, the higher the concentration of $\ce{H+}$ ions (since $\text{pH} = -\log[\ce{H+}]$).
2. Compare the pH values: Lemon juice has a pH of 2.3, and orange juice has a pH of 3.5. Since 2.3 < 3.5, lemon juice has a lower pH.
3. Determine $\ce{H+}$ ion donation: A lower pH means a higher $\ce{H+}$ concentration, so lemon juice donates more $\ce{H+}$ ions than orange juice.
4. Relate to egg white solidification: Egg whites solidify in the presence of acids (more $\ce{H+}$ ions mean a stronger acid effect). So lemon juice, with more $\ce{H+}$ ions, is better for solidifying egg whites.

Answer:

Lemon juice, because it donates more $\ce{H+}$ ions than orange juice.