Chemistry

Chemistry, 12.10.2019 01:20, heidibode

The amount of i₃⁻(aq) in a solution can be determined by titration with a solution containing a known concentration of s₂o₂⁻³(aq) (thiosulfate ion). the determination is based on the net ionic equation 2s₂o₃²⁻(aq)+i₃⁻(aq)⟶s₄o₆²⁻(aq)+3i⁻( aq). given that it requires 38.1 ml of 0.440 m na₂s₂o₃(aq) to titrate a 25.0 ml sample of i₃⁻(aq), calculate the molarity of i₃⁻(aq) in the solution.

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Chemistry, 25.07.2019 22:20, nataluarenhg6924

The amount of i−3(aq) in a solution can be determined by titration with a solution containing a known concentration of s2o2−3(aq) (thiosulfate ion). the determination is based on the net ionic equation 2s2o2−3(aq)+i3(aq)⟶s4o2−6(aq)+3i−(aq) given that it requires 29.6 ml of 0.260 m na2s2o3(aq) to titrate a 30.0 ml sample of i−3(aq), calculate the molarity of i−3(aq) in the solution.

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Chemistry, 10.09.2019 18:20, AthenAt5607

Problem page a chemistry student must write down in her lab notebook the concentration of a solution of sodium thiosulfate. the concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. here's how the student prepared the solution: the label on the graduated cylinder says: empty weight: she put some solid sodium thiosulfate into the graduated cylinder and weighed it. with the sodium thiosulfate added, the cylinder weighed . she added water to the graduated cylinder and dissolved the sodium thiosulfate completely. then she read the total volume of the solution from the markings on the graduated cylinder. the total volume of the solution was . what concentration should the student write down in her lab notebook? be sure your answer has the correct number of significant digits.

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Chemistry, 18.10.2019 17:10, Lydiaxqueen

The amount of i−3(aq)i3−(aq) in a solution can be determined by titration with a solution containing a known concentration of s2o2−3(aq)s2o32−(aq) (thiosulfate ion). the determination is based on the net ionic equation 2s2o2−3(aq)+i−3(aq)⟶s4o2−6(aq)+3i−(aq) 2s2o32−(aq)+i3−(aq)⟶s4o62−(aq)+3i−(aq) given that it requires 25.2 ml25.2 ml of 0.470 m na2s2o3(aq)0.470 m na2s2o3(aq) to titrate a 10.0 ml10.0 ml sample of i−3(aq),i3−(aq), calculate the molarity of i−3(aq)i3−(aq) in the solution.

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Chemistry, 19.10.2019 00:30, laequity7325

Sodium thiosulfate, na2s2o3, is used as a fixer in photographic film developing. the amount of na2s2o3 in a solution can be determined by a titration with iodine, i2, according to the equation: 2na2s2o3(aq) + i2(aq) --> na2s4o6 +2nai(aq). calculate the concentration of the na2s2o3 solution if 23.50 ml of a 0.1710 m i2 solution react exactly with a 100.0 ml sample of the na2s2o3 solution. use 4 sig. fig. aside, the end of the titration is determined by the color. nai is a pale yellow and i2 is a deep purple. just when the purple color persists, all the iodine that can react has reacted.

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