Granite hasn't a pH.
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pH>7.0
Doritos are about a 4.3 on the pH scale!
Limestone and marble are rocks that have a pH on the alkaline side of the pH scale (above 7). On the other hand, granite and sandstone are rocks that typically have a neutral to slightly acidic pH.
The preferred soil pH level for strawberries is 5.8 to 6.2. If the soil is too acidic, add ground limestone to bring the pH level within that range.
Heating pure water the pH decrease.