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21 November, 12:17

In a solution labeled "0.10 m hno3," which is correct? [h3o + ]

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  1. 21 November, 12:20
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    When 0.1 M HNO₃ is added to water it dissociates as follow,

    HNO₃ → H₃O⁺ + NO₃⁻

    Let us calculate the pH of this acid in order to know its strength,

    As,

    pH = - log [H₃O⁺]

    Putting H⁺ concentration value,

    pH = - log [0.1]

    pH = 1

    It is highly acidic,

    And being strong acid it completely ionizes in water producing only H₃O⁺ and NO₃⁻.

    So,

    The concentration of H₃O⁺ = 0.1 M

    and,

    The concentration of NO₃⁻ = 0.1 M
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