Alchemy is a branch of ancient knowledge that states that the only three essential substances in nature are salt, sulfur, and me
1 answer:
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Answer:
Less than
Explanation:
According to the question, the drop counter is counting four out of five drops of base added to the HCl. So when the titration will reach to the end point the volume of Base recorded will be less than the actual volume of the base dropped in the solution.
We will use law of equivalence for the calculation of concentration of HCl,
Where, and
are molarity and volume of HCl and
and
are molarity of volume of the base added.
Thus concentration of HCl will be calculated as,
As the recorded is less than the actual amount present in the solution, the calculated value of concentration of HCl will also be less than the actual.
The current required to accumulate the 1.22 grams of nickel in 0.5 hours is 2.23 A.
<h3>What is current?</h3>The current is given as the product of the charge with time. In the electrochemical analysis of the nickel, there will be a reduction of the nickel ion to nickel. The formation is given as:
There is the deposition of 1 mole of Ni with 2 electrons transfer. The transfer of charge for 1 mole that is 58.7 grams Nickel is:
The mass of Ni to be deposited is 1.22 grams. The charge required is given as:
The current required to transfer 4010.7 C of charge in 1800 seconds is given as:
Thus, the current required to accumulate the 1.22 grams of nickel in 0.5 hours is 2.23 A.
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