Question

The correct order of acidic nature is _____.
a.) \[C{{l}_{2}}{{O}_{7}}>S{{O}_{3}}>{{P}_{2}}{{O}_{10}}\]
b.) \[C{{O}_{2}}>{{N}_{2}}{{O}_{5}}>S{{O}_{3}}\]
c.) \[N{{a}_{2}}O>MgO>A{{l}_{2}}{{O}_{3}}\]
d.) \[{{K}_{2}}O>CaO>MgO\]

Answer 1

Hint: In chemistry an acid compound is something that has a low pH and is as opposed to a base, which has a higher pH. Various kinds of acids and vinegar are also acidic. This word comes from acid which originally meant "of the taste of vinegar."

Complete step by step answer:
Acidic oxides, or acid anhydride, are oxides that react with water to form an acid, or with a base to form a salt. They are oxides of either non-metals or of metals in high oxidation states. An acidic solution can be formed when a non-metal oxide is dissolved in water. When\[C{{l}_{2}}{{O}_{7}}\] is dissolved in water it will form one of the strongest acids which is per chloric acid. Sulphur trioxide \[S{{O}_{3}}\] will dissolve to form acidic solution of sulphuric acid while \[{{P}_{2}}{{O}_{10}}\]will form weakly acidic acid phosphoric acid.
Hence, the order is
\[C{{l}_{2}}{{O}_{7}}>S{{O}_{3}}>{{P}_{2}}{{O}_{10}}\]
 +7 +6 +5
also because as the oxidation state increases, the non-metal oxides become more acidic.
So, the correct answer is “Option A”.

Note: An acidic oxide is defined as an oxide which when combined with water gives off an acid. A basic oxide is similarly an oxide which when combined with water gives off a base. When a substance can react chemically, both as a base or acid it termed as an amphoteric solution. The most common chemical property is the type of oxide that a given element forms. Metals generally form oxides that are basic, but non-metals form oxides that are acidic.