Final answer:
The alkalinity of a brine with a pH of 10 is lower compared to a brine with a pH of 8 because higher pH values indicate greater alkalinity.option b.
Step-by-step explanation:
When comparing a brine with a pH of 8 to one with a pH of 10, its alkalinity is B) Lower. This is because the pH scale is logarithmic, meaning each whole number pH change represents a ten-fold change in hydrogen ion concentration. A higher pH indicates a lower concentration of hydrogen ions, resulting in greater alkalinity. Since the brine with a pH of 10 has fewer hydrogen ions than the brine with a pH of 8, it is more alkaline. The pH scale ranges from 0 to 14 with 7 being neutral; pH values above 7 indicate basic or alkaline solutions, with higher pH values representing more alkalinity.
When comparing a brine with a pH of 8 to one with a pH of 10, the alkalinity is higher in the brine with a pH of 10.
The pH scale ranges from 0 to 14, with anything below 7 being acidic and anything above 7 being alkaline. As the pH increases, the solution becomes more alkaline. So, a higher pH value indicates a greater alkalinity.
In this case, since the pH of the brine with a pH of 10 is higher than the brine with a pH of 8, it means that the brine with a pH of 10 has a higher alkalinity. Therefore, the correct answer is higher (Option A).