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You make up 0.100 L of a buffer having 1.00 M acetic acid and 1.10 M sodium acetate.
The Ka of acetic acid is 1.8 x 10-4.
(a) Determine the pH of this buffer. (b) You then add 30.00 mL of 0.100 M HCl to the solution. Determine the pH value after this addition.
The shape of an orbital is given by the quantum number : (1) n (2) l (3) m (4) s Ans: l
what is the principle of solvent extraction?
why boron have maximum covalency 4 and others have maximum covalency 6
Q. What are the properties of water? Ans. Water is a colorless, odorless, tasteless liquid with a melting and freezing point of 0 o C and a boiling point of 100 o C at 1 a
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The radius of the nucleus is related to the mass number A by : (1 )R= R 0 A 1/2 (2) R= R 0 A (3) R= R 0 A 2
Elements upto atomic number 103 have been synthesized and studied. If a newly discovered element is found to have an atomic number 106, its electronic configuration will be: (1
Visible range of hydrogen spectrum will contain the following series: (1) Pfund (2) Lyman (3) Balmer (4) Brackett Ans: Balmer
Q. Requirements for the evaluation process? Some of the requirements to be kept in mind for the evaluation of the products are listed herewith: • People in a sensory test a
Copper=54.1%, oxygen=20.1% and the balance sulfur. Could this also be the molecular formula? What other data is needed?
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