The number the represents a neutral pH is______. Numerical Answers Expected.
1 answer:
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Answer:
Explanation:
Mass of stock solution = 20 g
Molar mass of NaOH = 40 g/mol
Volume of stock solution = 0.150 mL
= Concentration of NaOH for the final solution
= Amount of stock solution taken = 15 mL
= Total volume of solution = 65 mL
Molarity is given by
We have the relation
The concentration of NaOH for the final solution is .
Answer: The standard potential for this cell is +1.49 V at 25C.
Explanation:
As titanium has lower reduction potential, it will act as anode and tin will acts as cathode.
Using Nernst equation :
where,
F = Faraday constant = 96500 C
R = gas constant = 8.314 J/mol.K
T = room temperature =
n = number of electrons in oxidation-reduction reaction = 2
Where both are standard reduction potentials.
= standard electrode potential of the cell = 1.49 V
= emf of the cell = ?
Now put all the given values in the above equation, we get: