Question

question 62 (1 point)
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which one among the following solutions is the most acidic?

1. solution with h⁺= 10⁻¹
2. solution with h⁺= 10⁻³
3. a solution with h⁺= 10⁻⁷
4. a solution with h⁺= 10⁻⁹
5. a solution with h⁺= 10⁻¹¹

Explanation:

Step1: Recall Acidic Solution Rule

A solution's acidity depends on $[\text{H}^+]$ concentration. Higher $[\text{H}^+]$ means more acidic.

Step2: Compare $[\text{H}^+]$ Values

Compare $10^{-1}$, $10^{-3}$, $10^{-7}$, $10^{-9}$, $10^{-11}$. Since for negative exponents, smaller exponent (closer to 0) means larger number. So $10^{-1} > 10^{-3} > 10^{-7} > 10^{-9} > 10^{-11}$.

Answer:

1. Solution with $[\text{H}^+]= 10^{-1}$