What is the order of decreasing ionization energy?
1 answer:
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Answer:
<u> </u><u>85.952 ml</u> needed to titrate the excess complexing reagent .
Explanation:
Lets calculate
After addition of 80 ml of EDTA the solution becomes = 20 + 70 = 90 ml
As the number of moles of =
=
=0.01172
Molarity =
=
=0.000586 moles
Excess of EDTA = concentration of EDTA - concentration of CoSO4
= 0.009005 - 0.000586
= 0.008419 M
As M1V1 ( Excess of EDTA ) = M2V2
V2 =85.952 ml
Therefore , <u>85.952 ml </u> needed to titrate the excess complexing reagent .
Answer:
pH = -1
Explanation:
A solution of 10 mol·L⁻¹ HCl is very acidic.
HCl is a strong acid, so it dissociates completely in water and
To get the pH, you take the negative logarithm of the hydronium ion concentration.
So, a pH = -1 represents a very acidic solution.
Answer:
- <em>All the gas molecules have the same average kinetic energy at a given temperature, under ideal gas assumption.</em>
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Explanation:
The three molecules, <em>HBr, NO₂, and C₂H₆,</em> such as any other gas molecule, under gas ideal assumption, have the same average kinetic energy at a given temperature.
The <em>temperature </em>is a measure of the kinetic energy of the of the particles (atoms or molecules) of a gas matter.
At a given temperature, all the gases have the same average kinetic energy of all gases.
That does not mean that all the particles have the same kinetic energy. This principle is not valid for individual particles. Different particles of a same (or differfen)t gas will have different speeds and consequently their individual kinetic energy will vary.
This principle is derived from the molecular kinetic theory and the mathematical expression for the kinetic energy in terms of temperature is:
Where:
- KE (avg) = average kinetic energy
- KB = Boltzman constant
- T = absolute temperature