What is not needed for corrosion of metals?
1 answer:
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Answer:
1: At temperatures below 542.55 K
2: At temperatures above 660 K
Explanation:
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In this case, according to the thermodynamic definition of the Gibbs free energy, it is possible to write the following expression:
Whereas ΔG=0 for the spontaneous transition. In such a way, we proceed as follows:
1:
It means that at temperatures lower than 542.55 K the reaction will be spontaneous.
2:
It means that at temperatures higher than 660 K the reaction will be spontaneous.
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The percent by mass sugar of a solution : 11.07%
<h3>Further explanation</h3>Given
mass of sugar = 12.45 g
mass of water = 100 g
Required
The percent by mass
Solution
Mass of solution :
Percent mass of sugar :