Answer:
Following are the <span>conjugate acid-base pairs;
1) NH</span>₃ , NH₄⁺
2) CH₃CO₂⁻ , CH₃COOH
Explanation:
According to Brønsted–Lowry acid–base theory an acid is any specie which can donate H⁺. When an acid donates proton it is converted into conjugate base.
Example:
CH₃COOH + BASE → CH₃COO⁻ + Base-H
In above reaction Acetic Acid (CH₃COOH) is acid, and after loosing proton it is converted into conjugate base i.e. Acetate (CH₃COO⁻).
And according to Brønsted–Lowry acid–base theory base is any specie which can accept H⁺. When base accepts proton it is converted into conjugate acid.
Example:
NH₃ + A-H → NH₄⁺ + A⁻
In above reaction Ammonia (NH₃) is a base, and after accepting proton it is converted into conjugate acid i.e. Ammonium (NH₄⁺)
Answer:
A.
Explanation:
The work function of the Platinum =
For maximum wavelength, the light must have energy equal to the work function. So,
Where,
h is Plank's constant having value
c is the speed of light having value
is the wavelength of the light being bombarded
Thus,
1. A
2. B
3. A
4. D
5. A
Explanation:
I think that should be correct
Basically what we are trying to do here is see if we are going from molecules to moles or moles to molecules.
We know that avogadro's number is 6.022x10^23 molecules in 1 mol of anything.
So if the questions asks you to convert moles to molecules just multiply it by avogadro's number
If the question asks you to convert molecules to moles just divide by avogadro's number
Electrons are equal to the number of Protons in a neutral atom.