\[28g\,{{N}_{2}}\] and 6.0 g of \[{{H}_{2}}\] are heated over catalyst in a closed one litre flask of\[450{}^\circ C\]. The entire equilibrium mixture required 500 mL of 1.0 M \[{{H}_{2}}S{{O}_{4}}\] for neutralisation. The value of \[{{K}_{c}}\] for the reaction \[{{N}_{2}}(g)+3{{H}_{2}}(g)\rightleftharpoons 2N{{H}_{3}}(g)\] is

• A. \[0.06\text{ }mo{{l}^{-2}}{{L}^{2}}\]           
• B. \[0.59\text{ }mo{{l}^{-2}}{{L}^{2}}\]
• C. \[1.69\text{ }mo{{l}^{2}}{{L}^{-2}}\]           
• D. \[0.03\text{ }mo{{l}^{2}}{{L}^{-2}}\]