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某小组利用硫代硫酸钠溶液与稀硫酸反应:Na2S2O3+H2SO4=Na2SO4+S↓+SO2↑+H2O,探究反应条件对速率的影响,下列有关说法正确的是(  )                                                                                                                                                                                                                                                                                                   

选项

反应温度/℃

Na2S2O3溶液

稀H2SO4

H2O

V/mL

c/(mol/L)

V/mL

c/(mol/L)

V/mL

25

10

0.1

10

0.1

0

25

5

0.1

10

0.1

X

50

10

0.1

5

0.2

5

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