The ph of a sample of blood is 7.4. The ph of a sample of gastric juice is 1.4.

Question

The ph of a sample of blood is 7.4. The ph of a sample of gastric juice is 1.4. The blood sample has: A) 5.29 times lower h+ than gastric juice B) 6 times lower C) 6000 times lower D) a million times lower (CORRECT ANSWER, I don't know why) E) 0.189 times lowe The ph of a sample of blood is 7.4. The ph of a sample of gastric juice is 1.4. The blood sample has: A) 5.29 times lower h+ than gastric juice B) 6 times lower C) 6000 times lower D) a million times lower (CORRECT ANSWER, I don't know why) E) 0.189 times lowe A) 5.29 times lower h+ than gastric juice B) 6 times lower C) 6000 times lower D) a million times lower (CORRECT ANSWER, I don't know why) E) 0.189 times lowe

Explanation / Answer

pH refers to the negative logarithm of hydrogen ion concentration.

Gastric juice contains abundant Hydrochloric acid HCl it is responsible for low pH approximately 2, therefore it is acidic in nature. Higher the hydrogen ion concentration higher is the acidity.

[H+] > [OH-]

Blood has the pH range between 7.35 to 7.45 and it is basic or alkaline in nature. The strength of basic nature is contributed by the high hydroxide ion [OH-] concentration.

[H+] < [OH-]

Acids are the one that releases hydrogen ions and bases usually bind them. The pH scale representing negative refers to the increase in number on the scale coresponds to decrease in hydregen ion concentration.Thereby for every increase of a single digit the hydrogen ion decrease by 10 fold.

For blood sample with pH 7.4 the hydregen ions lower by 10,00,000 fold i.e a million times lower [H+] than gastric juice.

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