Sodium carbonate and hydrochloric acid react according to the equation below.

$${\text{N}}{{\text{a}}_2}{\text{C}}{{\text{O}}_3}({\text{s)}} + 2{\text{HCl(aq)}} \to {\text{C}}{{\text{O}}_2}({\text{g)}} + 2{\text{NaCl(aq)}} + {{\text{H}}_2}{\text{O(l)}}$$

Which conditions will produce the fastest initial rate with 2.0 g of powdered sodium carbonate?

A.     ${\text{100 c}}{{\text{m}}^{\text{3}}}$ of ${\text{1.0 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}$ hydrochloric acid at 323 K

B.     ${\text{50 c}}{{\text{m}}^{\text{3}}}$ of ${\text{2.0 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}$ hydrochloric acid at 323 K

C.     ${\text{100 c}}{{\text{m}}^{\text{3}}}$ of ${\text{1.0 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}$ hydrochloric acid at 348 K

D.     ${\text{50 c}}{{\text{m}}^{\text{3}}}$ of ${\text{2.0 mol}}\,{\text{d}}{{\text{m}}^{ - 3}}$ hydrochloric acid at 348 K

D