Final answer:
An alkaline detergent has a pH level higher than 11, indicating it is a strong base capable of dissolving fats and oils, unlike acidic or neutral detergents.
Step-by-step explanation:
The type of detergent with a pH level higher than 11 is an alkaline detergent. Alkaline detergents include substances like sodium hydroxide and potassium hydroxide, which are strong bases capable of dissolving fats, oils, and proteins. Household cleaning agents commonly considered alkaline include bleach, with a pH of around 12, and ammonia, with a pH of about 11. Notably, lemon juice has a pH of 2 and is more acidic than orange juice which has a pH of 4. This is because pH is a logarithmic scale, so a pH difference of one unit represents a tenfold difference in acidity. When comparing acidic and alkaline substances, it’s important to recognize that a pH below 7 indicates an acidic solution, whereas a pH above 7 indicates a basic, or alkaline, solution.