Technically, pH is the negative logarithm of the hydrogen ion concentration: pH is a numerical (specifically logarithmic) measure of how acidic or basic (also called alkaline) something is.
This makes it possible to use a colorimetric pH test. To measure your carbon dioxide output, you will make use of the fact that carbon dioxide is an acidic gas. In this project, you will learn a method for measuring the relative amount of carbon dioxide in the air that you exhale. Whereas the water ends up in your sweat or urine, the carbon dioxide is released back into the air when you exhale.
Water and carbon dioxide are waste products of cellular respiration that are usually not used by your body. The chemical equation of cellular respiration is given in Equation 1.Įquation 1: Cellular respiration-a process in which glucose reacts with oxygen to form carbon dioxide, water and energy-happens inside the cells of your body.
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