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For each pH listed below indicate if it is acid, base, or neutral (0.5 pts) pH...

  1. For each pH listed below indicate if it is acid, base, or neutral (0.5 pts)
    1. pH 4
    2. pH 7
    3. pH 10
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Answer #1

The pH scale is used to measure the potential Hydrogen i.e. how much hydrogen ion (H+) concentration is present in the substance in relation to hydroxide ions (OH​​​-). Higher hydrogen ion concentration means it is acidic and lesser hydrogen ion concentration means it is basic. The scale ranges from 0 to 14. Based on this measure, a

A pH of 7 is neutral (equal concentration of H+ and OH​​​​​- ions)

A pH lesser than 7 is acidic (greater concentration of H+ than OH​​​​​- ions)

pH higher than 7 is base. (Lesser concentration of H+ than OH​​​​​- ions)

Therefore,

a. A pH of 4 is acidic since it is lower than 7. An example would be tomato juice.

b. A pH of 7 is neutral. pH 7 means that the number of hydrogen ions and hydroxide ions are in equal concentration so it cannot be a base nor can it be an acid. Eg. Water.

c. A pH of 10 is base since it is higher than 7. For example, Milk of magnesia

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