Which of the following is an acidic solution?

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Multiple Choice

Which of the following is an acidic solution?

Acidity reflects how many hydrogen ions are in solution—the lower the pH, the more acidic the solution. Orange juice contains citric acid, a genuine acid that donates H+ and lowers the pH to about 3–4, making it clearly acidic. Water sits at neutral pH around 7, so it isn’t acidic. A salt solution like table salt in water is typically neutral and doesn’t inherently lower the pH. Milk has lactic acid and is mildly acidic, with a pH around 6.5–6.7, but it’s not as acidic as orange juice. So orange juice best fits the idea of an acidic solution.

Acidity reflects how many hydrogen ions are in solution—the lower the pH, the more acidic the solution. Orange juice contains citric acid, a genuine acid that donates H+ and lowers the pH to about 3–4, making it clearly acidic. Water sits at neutral pH around 7, so it isn’t acidic. A salt solution like table salt in water is typically neutral and doesn’t inherently lower the pH. Milk has lactic acid and is mildly acidic, with a pH around 6.5–6.7, but it’s not as acidic as orange juice. So orange juice best fits the idea of an acidic solution.

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