Essay
A student attempts to dissolve a small amount of CuCO3 in 0.0100 M NaOH. Despite vigorous stirring, the material does not apparently dissolve. However, after a while the student notices that the solid has changed appearance. When the pH of the solution is measured, it is found to have gone down. Explain these observations. Was the original goal of the experiment achieved?
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The declining pH (i.e., declining [OH-]) ...View Answer
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