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Acidophiles do best in an environment with a pH of 3 or less.
pH, technically, is unitless due to its logarithmic nature. However, some prefer to say that pH 14.0 is '14 pH units'.
Microorganisms also prefer a certain pH level in the substance or environment in which they grow--that is, they prefer to have particular acidic qualities in their surroundings. Most microorganisms, including most human pathogens, are neutriphils, organisms that prefer a neutral pH level. Some like high pH levels, but most often, if conditions are too acidic, then the organism's enzymes break down.
The pH of water is 7 http://en.wikipedia.org/wiki/File:PH_scale.png
Water is not a good pH buffer.
pH balance similar to sugar water
The pH level of Ammonia is 11.1 which means it's basic (or just 11 if you prefer). The pH of water is 7 (neutral).
pH of 5. This answers is correct assuming you brew your coffee with distilled water or "pure water" as it can be referred to. However most, if not all, municipal water and some rural water systems have acidic water that comes out of the tap. even if you filter this water there may still be some residual acidic properties. Normal black coffee tends to have a pH in the range of 4.3 to 5.0
Bleach has a pH level of 13. Distilled water has a pH of 7 while the pH of black coffee is 5 and the pH of lemon juice is 2.
A pH of 3.7-5.5. They are acidic.
there are a lot of things that have a pH OF 5 some aee pure rain water and black coffee.
Different species of tropical fish require different pH settings. Generally, a tropical fish will thrive in a pH of between 6.5 to 7.5.
Acidophiles do best in an environment with a pH of 3 or less.
pH, technically, is unitless due to its logarithmic nature. However, some prefer to say that pH 14.0 is '14 pH units'.
"Safe" depends on what you want it for, but anywhere from 6.0 to 8.0 should be okay for some time.
The pH of water is pH7
Microorganisms also prefer a certain pH level in the substance or environment in which they grow--that is, they prefer to have particular acidic qualities in their surroundings. Most microorganisms, including most human pathogens, are neutriphils, organisms that prefer a neutral pH level. Some like high pH levels, but most often, if conditions are too acidic, then the organism's enzymes break down.