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Which substance has the highest pH?

A: orange juice
B: rain
C: a sulfuric acid solution
D: a lye solution

User NWorx
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1 Answer

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Final answer:

A lye solution has the highest pH and is considered a base, making it the most basic among the options provided, which include acidic substances like orange juice and sulfuric acid.

Step-by-step explanation:

The substance with the highest pH among the options given is D: a lye solution. pH is a measure of how acidic or basic a substance is. Substances with a pH lower than 7 are considered acidic, while those with a pH higher than 7 are considered basic. Orange juice (pH ~4) and rain (which can have a slightly acidic pH due to dissolved CO2 and other pollutants) are both acidic. A sulfuric acid solution is also highly acidic. On the other hand, a lye solution, which is a common name for a strong base such as sodium hydroxide (NaOH), typically has a very high pH, around 13.5 to 14.

User Coachcal
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