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

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.