硫代硫酸钠溶液与稀硫酸反应的化学方程式为:\(\rm{Na_{2}S_{2}O_{3}+H_{2}SO_{4}═Na_{2}SO_{4}+SO_{2}↑+S↓+H_{2}O}\),可以通过出现浑浊的快慢来判断反应的快慢程度,下列各组实验中最先出现浑浊的是\(\rm{(}\) \(\rm{)}\)
实验 | 反应温度\(\rm{/℃}\) | \(\rm{Na_{2}S_{2}O_{3}}\)溶液 | 稀\(\rm{H_{2}SO_{4}}\) |
\(\rm{V/mL}\) | \(\rm{c/(mol⋅L^{-1})}\) | \(\rm{V/mL}\) | \(\rm{c/(mol⋅L^{-1})}\) |
\(\rm{A}\) | \(\rm{25}\) | \(\rm{5}\) | \(\rm{0.1}\) | \(\rm{20}\) | \(\rm{0.1}\) |
\(\rm{B}\) | \(\rm{25}\) | \(\rm{5}\) | \(\rm{0.2}\) | \(\rm{10}\) | \(\rm{0.2}\) |
\(\rm{C}\) | \(\rm{35}\) | \(\rm{5}\) | \(\rm{0.1}\) | \(\rm{20}\) | \(\rm{0.1}\) |
\(\rm{D}\) | \(\rm{35}\) | \(\rm{5}\) | \(\rm{0.2}\) | \(\rm{10}\) | \(\rm{0.2}\) |