Answer:
C. II, III, IV, and V.
Explanation:
Acid buffer is generally formed by the combination of a weak acid as well as the salt of the conjugate base.
Basic buffer is formed the combination of a weak base and also the salt of the conjugate acid.
On dilution the ration of the concentration terms of the salt and weak acid/base does not change. Hence the pH of the buffer solution does not change.
When acid or base is added to buffer, it resists changes in the pH.
Therefore, option (C) is correct.
Answer: water solutions conducts charge
Explanation: solid sodium chloride is n insulator.NaCl is dissolved in water
In ionic forms. In solution there are Na+ and Cl- ions which can transfer charge.
Flammable liquid,gasoline, oil, and etc
When it switches to a lower orbital, the atom emits energy in the form of photons.