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9 August, 21:52

Orange juice has a hydrogen ion concentration of approximately 10^-4. What is the pH of orange juice?

Black coffee has a hydrogen ion concentration of approximately 10^-5. Is black coffee a stronger or weaker acid than orange juice?

Pure water has a hydrogen ion concentration of 10^-7M. What is the pH of water? Is it acid or base?

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  1. 9 August, 22:34
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    A) 4

    pH=-log[H+]

    pH=-log (10^-4)

    B) Weaker

    pH of orange juice=4

    pH of coffee=5

    An acid with pH of 4 is stronger than a pH of 5

    C) 7, neither/neutral

    pH of water=7
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