<u>standardization of a volumetric solutio</u><u>n used for titration is one of the most important preconditions for reliable and transparent titration results.</u>
"A. Fertile plains make it possible for farmers to grow a variety of crops." Italy's ability to grow a variety of crops aided in Rome's power over the world for many years, by providing lots of nutrients for its citizens and items to trade.
It follows that the reaction is spontaneous at high temperatures Option A.
<h3>What is ΔS ?</h3>
The term ΔS is referred to as the change in the entropy of the system. Now recall that entropy is defined as the degree of disorderliness in a system. If a system is highly disorderly then it means that it has a high entropy. Also, ΔH has to do with the heat change that accompanies a reaction.
We know that both the entropy and the heat change can both either be positive or negative. Now we know that the equation ΔG = ΔH - TΔS can be used to ascertain whether or not a reaction will be spontaneous. If the result is negative, then the reaction will be spontaneous.
As such, when then it follows that the reaction is spontaneous at high temperatures Option A.
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Answer:
Therefore when 1.26 moles of H₂O is reacted 0.63 mole of O₂ are produced.
Explanation:
The required reaction is
H₂O → O₂+H₂
The reaction is not balance reaction. First we have to balance the reaction.
2H₂O → O₂+2H₂
From the above reaction we conclude that,
2 mole of H₂O produces 1 mole of O₂ and 2 moles of H₂.
∴When 2 mole of H₂O reacts then it produces 1 mole of O₂
1 mole of H₂O reacts then it produces mole of O₂.
1.26 mole of H₂O reacts then it produces mole of O₂.
=0.63 mole
Therefore when 1.26 moles of H₂O is reacted 0.63 mole of O₂ are produced.