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The acidity of a substance relates to the proportion of free hydrogen ions (H+) it contains. Acidity is measured on a logarithmic scale. Even a small decrease in pH of ocean water can cause a large increase in hydrogen ions and acidity. This increase can have grave effects on marine ecosystems. For the last 300 million years, the average pH of the oceans has been 8.2. Today, the average pH is 8.1. Using the hydrogen ion concentrations, what is the percent increase in acidity of the ocean in the past compared to today?

The average pH today is 8.1, with 7.9 × 10-9 moles per liter of hydrogen ions. The original average pH was 8.2, with 6.3 × 10-9 moles per liter of hydrogen ions.

Using the formula, the percent increase in the number of hydrogen ions from then to now would be computed this way:

The hydrogen ion concentration and acidity of the ocean has increased by 25%.

Explanation:

Answer Link

AakanshaC AakanshaC · Answer 2 · 2022-06-02T19:31:29+02:00

There is a [tex]25%[/tex] % increase in acidity of the ocean when compared to the past.

What is an acid?

An acid is a chemical species that can donate a proton or accept a lone pair of electron.

What is the average pH of ocean for the last 300 million years?

The average pH of ocean for the last 300 million years is 8.2.

What is the current pH of the ocean?

The current pH of the ocean is 8.1.

What is the percent increase in the acidity?

Percent increase in acidity =

[tex]\frac{initial concentration of H^+ ions - final concentration of H^+ ions}{Initial concentration of H^+ ions}[/tex] ×[tex]100[/tex]

Therefore, percent increase in acidity = [tex]\frac{7.9-6.3}{6.3}[/tex]×[tex]100[/tex][tex]=25[/tex]%

To learn more about acidity, pH, and proton here,

https://brainly.com/question/491373?

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