\What is the electrical charge of an electron? positive negative neutral
1 answer:
You might be interested in
Answer:
a) For nicotine, the protonated form is the present in stomach.
b) For caffeine, the neutral base form is the present in stomach.
c) For Strychinene, the protonated form is the present in stomach.
d) For quinine, the protonated form is the present in stomach.
Explanation:
In a basic dissociation for molecules with basic nitrogen, the equilibrium is:
A + H₂O ⇄ AH⁺ + OH⁻
<em>Where A is neutral base and AH⁺ is protonated form</em>
The basic dissociation constant, kb, is:
As pH in stomach is 2,5:
[OH] =
[OH] = 3,16x10⁻¹² M
Thus:
<em>(1)</em>
Using (1) it is possible to know if you have the neutral base or the protonated form, thus:
(a) nicotine Kb = 7x10^-7
[AH⁺}>>>>[A]
For nicotine, the protonated form is the present in stomach
(b) caffeine,Kb= 4x10^-14
[AH⁺}<<<<[A]
For caffeine, the neutral base form is the present in stomach
(c) strychnine Kb= 1x10^-6
[AH⁺}>>>>[A]
For Strychinene, the protonated form is the present in stomach
(d) quinine, Kb= 1.1x10^-6
[AH⁺}>>>>[A]
For quinine, the protonated form is the present in stomach.
I hope it helps!
Answer:
The correct option is;
2) Thermal energy increases by a factor of R
Explanation:
The equipartition energy theorem states that when molecules are in a state of thermal equilibrium, particles within the system posses equal average energy with each degree of freedom which can be known as energy due to a state of having a particular temperature or thermal energy given by the relation
= Kinetic energy of translation + Kinetic energy of rotation + Energy of vibration
For a mono-atomic gas, = 3/2·n·R·T
For a diatomic gas, = 5/2·n·R·T
For a solid element, = 3·n·R·T
Therefore, as the temperature is doubled, the thermal energy increases by a factor of R.