Lactic Acid Lab Report

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A continual production of lactic acid through fermentation may result in an increase of acidity within muscle cells and blood.

The normal pH of muscle cells is 7.4 – basic, though can drop as low as 6.5 due to lactic acid build up. When muscle cells have a pH as acidic as 6.5, it can cause muscle contraction to become impaired, nerve endings in the muscles to become stimulated, causing pain and burning, one may also experience disorientation and nausea and this can lead to a condition known as acidosis.

When the pH in the body becomes too low, a buffering system is implemented. Carbon dioxide dissolves into the water present in the body to produce carbonic acid (H2CO3). Carbonic acid – being a weak acid – only partially dissociates into
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