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Question: please answer all 1 a a patient is suspected of...

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1) a) A patient is suspected of having low stomach acid, a condition known as hypochloridia. To determine whether the patient has this condition, her doctors take a 20.00 mL sample of her gastric juices and titrate the sample with 0.000132 M KOH. The gastric juice sample required 30.9 mL of the KOH titrant to neutralize it. Calculate the pH of the gastric juice sample. Assume the sample contained no ingested food or drink which might otherwise interfere with the titration.

b) For the patient to be suffering from hypochloridia, the pH of the gastric juices from the stomach must be greater than pH 4. Does the patient have hypochloridia?

2) If a buffer solution is 0.510 M in a weak acid (Ka = 6.0 × 10-6) and 0.210 M in its conjugate base, what is the pH?

3) The concentration of a biomolecule inside a rod-shaped prokaryotic cell is 0.0033 M. Calculate the number of molecules inside the cell, which is 4.3 μm long and 1.4 μm in diameter.

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