Which of the following is not a conjugate acid base

Which of the following is not a conjugate acid-base pair?
Which of the following ionic species can behave as both a Brønsted–Lowry base and as a Brønsted–Lowry acid?
Does ethanamine (CH3CH2NH2) act as a proton donor or proton acceptor?
Phenylamine (aniline, C6H5NH2) is an organic compound that possesses the odor of rotten fish. It reacts with water
as shown in the equation below:
⇌
In the reaction of aniline and water, is the water acting as a Bronsted-Lowry acid or as a Bronsted-Lowry base?
Which statement best describes a Bronsted-Lowry acid? A proton donor
State the name given to a species that can act as both a base and an acid by accepting or donating a proton. Answer
with one word only.
State the name of the conjugate base of water. Give the name of the ion, not the formula. hydroxide
Which among the molecular/ionic species below can act as both a conjugate acid and a conjugate base?
Which of the following species is not amphiprotic? NH4+
The amino acid alanine has the structure: H2NCH(CH3)COOH. Which of the following species represents its
conjugate acid?
What is the conjugate acid of the HPO42–
Which of the following equations does not show a Brønsted-Lowry acid−base reaction?
Equal amounts of sulfuric acid (H2SO4) and nitric acid (HNO3) are mixed in a beaker. The following reaction occurs:
⇌
Which statement is true about the reaction?
Which of the following acids has the lowest electrical conductivity (assume all solutions are 1.00 mol dm-3)?