2006-12-03 21:08:18 · 3 answers · asked by curious 1 1 in Science & Mathematics ➔ Chemistry
An acid is a compound, when dissolved in water, produces hydrogen ions [H^+] as the ONLY positive ions. Eg. hydrochloric acid.
A base is an oxide of a metal. Eg. copper (II) oxide CuO
An alkali is a soluble base, e.g. oxide of sodium forms sodium hydroxide when dissolved in water.
Note that only oxides of group 1 metals are completely soluble in water, while those of group 2 metals are only slightly soluble in water.
Oxides of group 3 metals and transition metals are NOT soluble in water.
2006-12-04 01:15:48 · answer #1 · answered by pete 2 · 0⤊ 0⤋
an acid is a substance which produces hydrogen ions as the only positive ions when dissolved in water. eg. nitric acid HNO3
a base is a substance which contains either hydroxide or oxide ions. any metal oxide or hydroxide. eg copper oxide CuO
an alkali is a soluble base. eg. sodium hydroxide NaOH
2006-12-04 05:25:05 · answer #2 · answered by pigley 4 · 0⤊ 0⤋
acids are substances that are Hydrogen donor while bases are Hydrogen acceptor. Acids were always sour while bases are bitter. vinegar, citrus fruids are acidic while ash and soap wre basic.
2006-12-04 05:27:40 · answer #3 · answered by RC 1 · 0⤊ 0⤋