6.
\(\rm{.}\)硫代硫酸钠溶液与稀硫酸反应的化学方程式为\(\rm{Na}\)\(\rm{{\,\!}_{2}}\)\(\rm{S}\)\(\rm{{\,\!}_{2}}\)\(\rm{O}\)\(\rm{{\,\!}_{3}}\)\(\rm{+H}\)\(\rm{{\,\!}_{2}}\)\(\rm{SO}\)\(\rm{{\,\!}_{4}}\)\(\rm{═Na}\)\(\rm{{\,\!}_{2}}\)\(\rm{SO}\)\(\rm{{\,\!}_{4}}\)\(\rm{+SO}\)\(\rm{{\,\!}_{2}}\)\(\rm{↑+S↓+H}\)\(\rm{{\,\!}_{2}}\)\(\rm{O}\),下列各组实验中最先出现浑浊的是\(\rm{(}\) \(\rm{)}\)
选项 | 反应温度\(\rm{/℃}\) | \(\rm{Na_{2}S_{2}O_{3}}\)溶液 | 稀\(\rm{H_{2}SO_{4}}\) | \(\rm{H_{2}O}\) |
\(\rm{V/mL}\) | \(\rm{c/mol·L^{-1}}\) | \(\rm{V/mL}\) | \(\rm{c/mol·L^{-1}}\) | \(\rm{V/mL}\) |
\(\rm{A}\) | \(\rm{25}\) | \(\rm{5}\) | \(\rm{0.1}\) | \(\rm{10}\) | \(\rm{0.1}\) | \(\rm{5}\) |
\(\rm{B}\) | \(\rm{25}\) | \(\rm{5}\) | \(\rm{0.2}\) | \(\rm{5}\) | \(\rm{0.2}\) | \(\rm{10}\) |
\(\rm{C}\) | \(\rm{35}\) | \(\rm{5}\) | \(\rm{0.1}\) | \(\rm{10}\) | \(\rm{0.1}\) | \(\rm{5}\) |
\(\rm{D}\) | \(\rm{35}\) | \(\rm{5}\) | \(\rm{0.2}\) | \(\rm{5}\) | \(\rm{0.2}\) | \(\rm{10}\) |