Why does the reaction H2O + Cu→no reaction not proceed to a product?
2 answers:
Answer: Option (c) is the correct answer.
Explanation:
It is known that a stronger element is able to displace a less stronger element in a chemical reaction.
And, according to the reactivity chart hydrogen is more reactive in nature than copper.
Therefore, when Cu is added to then there will be no reaction because copper is less reactive than hydrogen.
Thus, we can conclude that the reaction not proceed to a product because copper has a lower activity than hydrogen and cannot replace it.
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Answer: A) 3.21 g
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.
We are given:
Mass of iron = 5.58 g
Mass of iron sulphide = 8.79 g
Mass of sulphur = x g
Total mass on reactant side = 5.58 + x
Total mass on product side = 8.79 g
Applying law of conservation of mass, we get:
Hence, the mass of reacting sulfur is 3.21 g.