SCIENCE
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
3
|
|
|
9
|
|
|
7
|
|
|
5
|
Detailed explanation-1: -A pH value of 7 is neutral, indicating that the substance or solution is neither acidic nor alkaline. In this case, the pH of a solution is tested, and it is found to be a basic solution. Since basic solutions must have a pH greater than 7, then the correct answer is option D. The measured solution has a pH of 9.
Detailed explanation-2: -A solution with a pH of 9 is basic in nature. The pH measures the hydrogen ion ( ) concentration.
Detailed explanation-3: -pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
Detailed explanation-4: -The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.
Detailed explanation-5: -The scale has values ranging from zero (the most acidic) to 14 (the most basic).