Which is correct about a 1.0 × 10⁻³ M HCl solution & a 1.0 × 10⁻⁵ M HClO₄ solution?

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TestUstad · Accepted Answer

The HCl solution is 100 times more acidic than the HClO₄ solution. Acidity is determined by the H⁺ concentration. Since both are strong acids, the [H⁺] is equal to their molarity. The ratio of concentrations is (1.0 × 10⁻³) / (1.0 × 10⁻⁵) = 100. Thus, the HCl solution is 100 times more concentrated in H⁺ and more acidic.

TestUstad · Answer

The HCl solution is less acidic than the HClO₄ solution

TestUstad · Answer

The HClO₄ solution is 100 times more acidic than the HCl solution

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None of these

Which is correct about a 1.0 × 10⁻³ M HCl solution & a 1.0 × 10⁻⁵ M HClO₄ solution?

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