Given that it requires 27.9 ml of 0.270 m na2s2o3(aq) to titrate a 15.0-ml sample of i3–(aq), calculate the molarity of i3–(aq) in the solution.

toriflaherty   ·   11.07.2019 11:30
ANSWER(S): 1 Show answers 7 Сomment
answered: kenzielema12
14.07.2019 17:40
It could possibly be beneficial if the experiment is successful.
answered: duncanswart1558
09.07.2019 18:20

you gotta add the following molecules so we can give u an answer


answered: faith1993
06.07.2019 13:30
Sun is explosive itself spread 9 is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric
answered: brainy51
12.03.2022 12:49

The molar concentration of the KI_3 solution is 0.251 mol/L.

Step 1. Write the balanced chemical equation

I_3^(-) + 2S_2O_3^(2-) → 3I^(-) + S_4O_6^(2-)

Step 2. Calculate the moles of S_2O_3^(2-)

Moles of S_2O_3^(2-)

= 27.9 mL S_2O_3^(2-) ×[0.270 mmol S_2O_3^(2-)/(1 mL S_2O_3^(2-)]

= 7.533 mmol S_2O_3^(2-)

Step 3. Calculate the moles of I_3^(-)

Moles of I_3^(-) = 7.533 mmol S_2O_3^(2- × [1 mmol I_3^(-)/(2 mmol S_2O_3^(2-)] = 3.766 mmol I_3^(-)

Step 4. Calculate the molar concentration of the I_3^(-)

c = "moles"/"litres" = 3.766 mmol/15.0 mL = 0.251 mol/L

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