The pH scale ranges from what values?

The pH scale ranges from 0 to 14, making this the correct answer. This scale is logarithmic and typically measures the acidity or basicity of a solution. A pH of 0 indicates a very strong acid, while a pH of 14 indicates a very strong base. A pH of 7 is considered neutral, such as in pure water.

The pH scale is widely used in chemistry to characterize substances. Although there are instances where solutions can have a pH value less than 0 or greater than 14 under extreme conditions, the standard range accepted in most practical applications is from 0 to 14.