It called cation, Well, When an atom gains or loses an electron, it
attains a net charge and becomes an ion. When electrons are lost, the
resulting ion is called cation and when electrons are gained, the
resulting ion is called an anion. So, Cations have a net positive
charge, while anions have a net negative charge. it is true.
Answer:
Option (B) is correct
Explanation:
Oxidation:
Reduction:
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Overall:
Nernst equation for this cell reaction at :
Where, n is number of electron exchanged and species inside third bracket represents concentrations in molarity.
Here, n = 2, and
So, plug in all the given values into above equation:
So,
As the value "0.059" varies from literature to literature and is most closest to therefore option (B) is correct.
Your hydrogen is being oxidized and your carbon dioxide is being reduced.
Answer:
Oxygen with the symbol O has the atomic number 8 which means it is the 8th element in the table. The number eight also means that oxygen has eight protons in the nucleus.
Explanation:
The dilution formula can be used to find the volume needed
c1v1 = c2v2
Where c1 is concentration and v1 is volume of the concentrated solution
And c2 is concentration and v2 is volume of the diluted solution to be prepared
c1 - 0.33 M
c2 - 0.025 M
v2 - 25 mL
Substituting these values in the equation
0.33 M x v1 = 0.025 M x 25 mL
v1 = 1.89 mL
Therefore 1.89 mL of the 0.33 M solution needs to be diluted up to 25 mL to make a 0.025 M solution