When both products are soluble, a double replacement equation will not produce a reaction.
<h3>What causes certain double displacement reactions to be inert?</h3>
We use the (s) symbol for solid because salt is an insoluble substance that will not dissolve in water. The silver, fluoride, potassium, and chloride ions would have effectively moved to a new location if there had been no precipitate formation, but they would still be floating around as ions. In this scenario no reaction happens.
<h3>What guidelines apply to responses involving double replacement?</h3>
A double replacement reaction occurs when two ionic compounds swap ions to form two new ionic compounds. The following response is an example of this kind: AB + CD AD + CB.
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Answer: Option (d) is the correct answer.
Explanation:
An electrochemical cell with the help of which chemical energy of a fuel (generally hydrogen) and an oxidizing agent (generally oxygen) are converted into electrical energy by a pair of redox reactions.
A fuel cell is able to generate electricity as long as fuel and oxygen are supplied to it.
As, hydrogen and oxygen are generally used as a fuel so, this results in the formation of water as a by-product.
Thus, we can conclude that the statement fuel cell automobiles are powered by water and the only emission is hydrogen, is FALSE about fuel cells.
The answer you need is A.
As I understand from your question, we should synthesize nickel sulfate first from nickel (II) oxide and sulfuric acid and second from nickel carbonate and sulfuric acid.
The chemical reactions will look like this:
NiO (s) + H₂SO₄ (aq) → NiSO₄ (aq) + H₂O (l)
NiCO₃ (aq)* + H₂SO₄ → NiSO₄ (aq) + H₂CO₃ (aq)
but carbonic acid will decompose to carbon dioxide and water
H₂CO₃ (aq) → CO₂ (g) + H₂O (l)
(*) NiCO₃ has a poor solubility in water, but enough to start the reaction.
It’s oscillation! i only know because that is the definition
