Multiple Choice
Which of the following aqueous solutions has a pH greater than at ?
5
views
17. Acid and Base Equilibrium
The pH Scale
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Oven cleaners typically contain strong bases such as sodium hydroxide. What is the most likely pH of an oven cleaner solution?
A
B
C
D
Verified step by step guidance1
Identify the nature of the substance in the oven cleaner. Sodium hydroxide (NaOH) is a strong base, meaning it dissociates completely in water to produce hydroxide ions (OH⁻).
Recall that pH is a measure of the hydrogen ion concentration, and for basic solutions, pH values are greater than 7. The pH scale ranges from 0 to 14, where 7 is neutral, values below 7 are acidic, and values above 7 are basic.
Since sodium hydroxide is a strong base, the solution will have a high concentration of OH⁻ ions, which corresponds to a low concentration of H⁺ ions, resulting in a high pH value.
Estimate the pH by considering typical concentrations of strong base solutions used in oven cleaners, which are usually quite concentrated, leading to pH values close to the upper end of the scale (around 13 or 14).
Compare the given options (13, 7, 2, 9) and select the one that best matches the expected high pH of a strong base solution, which is 13.
Related Videos
Related Practice
