How many total atoms are in 0.460 g of P205?
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Ответ:
2.872.
Explanation:
For weak acids: [H⁺] = √(Ka.C).∴ [H⁺] = √(Ka.C) = √(1.8 x 10⁻⁵)(0.1 M) = 1.342 x 10⁻³.
∵ pH = - log[H⁺].
∴ pH = - log(1.342 x 10⁻³) = 2.872.