What is the correct structure of sodium thiosulfate?
There are at least two other structures of the stoichiometry $\ce{Na2S2O3}$, essentially with the same bonding motif, but different coordinations of the sodium atoms. The first is about $\pu{2.4 kJ mol-1}$ more stable than the previously shown. The second is …
How to calculate the equivalent mass of Na2S2O3? [closed]
2019年5月14日 · So, equivalent mass of $\ce {Na2S2O3}$ is equal to its molar mass, for molecular iodine it is half of its molar mass. Well, this is somewhat tricky. For the mentioned reaction, releasing iodine, the equivalent mass is M/5. But if the iodine is just an intermediate product to be titrated by Na2S2O3, the equivalent mass is M/6.
inorganic chemistry - Oxidation of sodium thiosulfate by iodine ...
2019年1月5日 · When $\ce {Na2S2O3}$ reacts with $\ce {I2}$, it undergoes a redox reaction as. $$\ce {2 Na2S2O3 + I2 -> Na2S4O6 + 2 NaI}$$. Sulfur is being oxidized from a $+2$ state to a $+2.5$ state. Why isn't it getting oxidized any further, …
Solved calculate the volume of na2s2o3 titrant used to reach
Chemistry expert. First, calculate the volume of N a 2 S 2 O 3 titrant used by subtracting the initial buret reading from the final buret reading. PART A: CALCULATION OF SODIUM HYPOCHLORITE CONCENTRATIONS TRIAL 1 2 TRIAL 3 TRIAL 2 18.0 36.0 18.0 1000 0.01810 0.1000 0.0018 initial Naso, buret volume (mL) = final Nasa, buret volume (mL) = | 18.0 ...
Solved Sodium thiosulfate, Na2S2O3, is used in the - Chegg
Chemistry questions and answers. Sodium thiosulfate, Na2S2O3, is used in the developing of photographic film. What is the concentration of Na2S2O3 if 74.2 g were mixed into a solution having a volume of 2.35 L? The molar mass of Na2S2O3 is 158.0 g/mol. M Na2S203 Check Answer You can check your answer 3 more times before the question is locked.
Solved Sodium thiosulfate, Na2S2O3, is used as a fixer in - Chegg
Question: 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). …
Solved Question 3. Write the rate law for the reaction - Chegg
From the general form for a rate law given above the general rate law for the reaction between HCl and Na 2 S 2 O 3 is written as: Rate = k [HCl]m [Na2S2O3]nRate = k [HCl]m [Na2S2O3]n. By determining how the reaction rate varies as the concentration of the reactant is varied in the orders m and n, you can determine the rate law.)
Solved PROCEDURE We standardized a KIO3 solution as well as
The volume when the color of solution changed from. PROCEDURE. We standardized a KIO3 solution as well as a Na2S2O3 solution. (Primary and Secondary Standardization) We titrated 30 ml of a standard potassium iodate ( mass= 0.505 g, MW= 214 g/mol, dissolved in 250 ml distilled water), 0.1 g of NaHCO3, 10ml 0f 0.2 M H2SO4, and 1 g of KI) with ...
Solved Sodium thiosulfate pentahydrate Na2SO3 + S - Chegg
Add anhydrous sodium sulfite (2.5 g), water (8 mL) and a stir bar. Equip the flask with a reflux condenser and heat the reaction mixture at reflux for 25 minutes by use of an oil bath. Take out a sample of the reaction solution (3 drops) with a Pasteur pipette to probe for sulfite. Dilute the sample with demineralized water (1 mL) in a small ...
Solved 11. Na2S2O3 (aq) + 4 NOCI (aq) + 2 NaOH (aq) → Na2SO4
Question: 11. Na2S2O3 (aq) + 4 NOCI (aq) + 2 NaOH(aq) → Na2SO4 (aq) + 4 NaCl (aq) + H20 0 A student performs an experiment to determine the value of the enthalpy change, AHºrn, for the oxidation- reduction reaction represented by the balanced equation above. In the experiment, the student uses the solutions shown in the table below.