Question

Which headings should be used to complete this table?

a) R-X, R-NH2, X=F, CI, Br, I, Weak base, Biochemical processes, Foul-smelling, Organic solvent
b) Biochemical processes, R-X, R-NH2, Organic solvent, X=F, CI, Br, I, Weak base, Foul-smelling
c) Weak base, R-X, R-NH2, Organic solvent, X=F, CI, Br, I, Biochemical processes, Foul-smelling
d) Foul-smelling, R-X, R-NH2, X=F, CI, Br, I, Weak base, Biochemical processes, Organic solvent

Answer 1

The appropriate headings for the table question are 'Weak base, R-X, R-NH2, Organic solvent, X=F, Cl, Br, I, Biochemical processes, Foul-smelling'. Ethylamine represents weak bases, whereas strong bases include Ca(OH)2 and NaOH.

Step-by-step explanation:

Identifying Strong and Weak Acids and Bases

The correct headings to complete the table from the choices provided would be (c) Weak base, R-X, R-NH2, Organic solvent, X=F, Cl, Br, I, Biochemical processes, Foul-smelling. This is because ethylamine (CH3CH2NH2) is a weak base, as are most amines in comparison to ammonia, and halogenated compounds (R-X where X can be F, Cl, Br, I) are commonly used in organic synthesis and might act in biochemical processes or be used as solvents due to their reactivity and properties. Organic compounds with these halogens can sometimes have foul odors.

Regarding the compounds listed, such as Ca(OH)2 and NaOH, these are strong Brønsted-Lowry bases as they completely dissociate in water. On the other hand, CH3CO₂H (acetic acid) and HF (hydrofluoric acid) are examples of acids with strength between H3O+ and H2O, being weaker than strong acids like HCl, HNO3, and H2SO4 but stronger than water. NH3 (ammonia) and Na2CO3 (sodium carbonate), compared to water, are Brønsted-Lowry bases with strengths between that of H2O and OH-.