Answer:
B. Lower than 100 °C because hydrogen sulfide has dipole-dipole interactions instead of hydrogen bonding.
Explanation:
Boiling point is a physical property which is usually a product of breaking intermolecular bonds.
Both dipole-dipole attractions are intermolecular bonds and they have serious effect on boiling point of a substance.
Hydrogen bonds are very strong intermolecular bonds compared to dipole-dipole attractions. In hydrogen bonding hydrogen atom is directly joined to a highly electronegative atom.
Dipole-Dipole attraction exists between molcules that are polar. Such molecules line up such that the positive pole of one molecule attracts the negative pole of another.
Hydrogen bonds in water are much stronger than the dipole-dipole attraction of hydrogen sulfide.
<h3>Answer:</h3>
Formic acid is the stronger acid.
<h3>Explanation:</h3>
The strength of an acid is determined by the power of it to dissociate and produce H⁺ ions. Greater the dissociation of an acid, the stronger that acid is. Also, extent of dissociation for particular acid is given by its dissociation constant i.e. Ka.
The greater the Ka value, the stronger an acid is and vice versa.
Calculating Ka value of Pivalic acid:
As,
pKa = -log [Ka]
So,
Ka = 10^-pKa
Putting value of pKa,
Ka = 10⁻⁵
Ka = 1.0 × 10⁻⁵
Calculating Ka value of Formic acid:
As,
pKa = -log [Ka]
So,
Ka = 10^-pKa
Putting value of pKa,
Ka = 10⁻³'⁸
Ka = 1.58 × 10⁻⁴
<h3>Conclusion:</h3>
As the Ka value of Formic acid is greater than Pivalic acid therefore, it is stronger acid than Pivalic acid.
<h2>TIP:</h2>
When comparing strength of acids, the acid with the lowest pKa value is considered the strongest acid and <em>vice versa</em>.
Answer: To figure the total magnification of an image that you are viewing through the microscope is really quite simple. To get the total magnification take the power of the objective (4X, 10X, 40x) and multiply by the power of the eyepiece, usually 10X.
Answer:
It's the Key to All Relationships. At the basis of all other emotions within a relationship is the sensation of love. When you feel loved, you feel less pressure, less alone, less anxiety, more secure, more confident, and more important.
Explanation:
Atomic #, proton, and electron
