The graph given below shows \(\left[\mathrm{H}^{+}\right]\) versus concentration for an aqueous solution of an unknown substance.
(a) Is the substance a strong acid, a weak acid, a strong base, or a weak base?
(b) Based on your answer to (a), can you determine the value of the pH of the solution when the concentration is 0.18 M?
(c) Would the line go exactly through the origin of the plot? [Sections 16.5 and 16.6]
Text Transcription:
[H+]
Step 1 of 5) Any living organism is a complex, highly organized, well-ordered system, even at the molecular level like the nucleosome we saw at the beginning of this chapter. Our entropy content is much lower than it would be if we were completely decomposed into carbon dioxide, water, and several other simple chemicals. Does this mean that life is a violation of the second law No, because the thousands of chemical reactions necessary to produce and maintain life have caused a large increase in the entropy of the rest of the universe. Thus, as the second law requires, the overall entropy change during the lifetime of a human, or any other living system, is positive. The second law of thermodynamics applies also to the way we humans order our surroundings. In addition to being complex living systems ourselves, we are masters of producing order in the world around us.
