In the reactants there is a curvy arrow, what does the direction of the arrow indicate?
2 answers:
Answer: Option (C) is the correct answer.
Explanation:
When a curvy arrow is placed on the reactants then it shows that an electron is being transferred from one atom to another.
And, it is known that when donation or transfer of an electron occurs from one atom to another then it results in the formation of an ionic bond and the compound formed is known as ionic compound.
For example, sodium when chemically combines with chlorine atom then one valence electron is donated by sodium atom to the chlorine atom. This forms the ionic compound NaCl.
Thus, we can conclude that in the reactants there is a curvy arrow, the direction of the arrow indicate that the cations give away an electron and the anions accept electrons.
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The molarity of formic acid is 100 mM or . The dissociation reaction of formic acid is as follows:
The expression for dissociation constant of the reaction will be:
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Here, pH of solution is 4.15 thus, concentration of hydrogen ion will be:
Similarly, thus,
Putting the values,
Therefore, the concentration of formate will be 0.2511 M.