A cation-exchange column is a type of chromatography that separates substances according to their charges. The cation-exchange column in particular has a negatively charged resin that will attract positively charged ions.
Applying this principle with amino acids, we can say, for example that the negatively charged ones (e.g., aspartate and glutamate) will elute first compared to the positively charged ones (e.g., lysine, arginine, and histidine), which will elute last.
Answer:
Water has polar O-H bonds. The negative O atoms attract the positive H atoms in nearby molecules, leading to the unusually strong type of dipole-dipole force called a hydrogen bond. Since water has hydrogen bonds, it also has dipole-induced dipole and London dispersion forces.
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Answer:
Iron is like iron man.
Iron ore is what is on caves
<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>.
