# Chemistry

posted by .

How many grams of I2 are present in a solution if 38.55ml of 0.160M Na2S2O3 solution is needed to titrate I2 the solution?

• Chemistry -

I2 + 2Na2S2O3 ==> Na2S4O6 + 2NaI
mols Na2S2O3 = M x L = ?
mols I2 = 1/2 mol Na2S2O3 (from the coefficients in the balanced equation).
g I2 = mols I2 x molar mass I2 = ?

## Similar Questions

1. ### Chemistry

Hi, I'm really having trouble this this chemistry problem. I have the answers; however I don't have extensive knowledge about titrations and I'm struggling with working it out. If anyone could suggest how to work this out (or even …
2. ### chemistry

How many grams of are present in a solution if 38.60 of 0.145 solution is needed to titrate the solution?
3. ### Science- Chemistry

How do I figure these out? A solution of sodium thiosulfate, Na2S2O3, is 0.1365 M. 29.28 mL of this solution reacts with 39.79 mL of I2 solution. What is the molarity of the I2 solution?
4. ### chemistry

How many grams of I2 are present in a solution if 33.75mL of 0.140M Na2S2O3 solution is needed to titrate the I2solution?
5. ### Chemistry

How many grams of I2 are present in a solution if 39.85mL of 0.160M Na2S2O3 solution is needed to titrate the I2 Solution
6. ### chemistry

In standardizing a potassium hydroxide solution, a student finds that 32.60mL of the base solution is needed to titrate 0.5045 grams of KHP to a phenolphthalein end point. In another titration, 26.63mL of this same base solution is …
7. ### Chemistry

Iodine, I2, reacts with aqueous thiosulfate ion in neutral solution according to the balanced equation I2(aq)+2S2O2−3(aq)→S4O2−6(aq)+2I−(aq). How many grams of I2 are present in a solution if 33.00 mL of 0.165 …
8. ### chemistry

25ml of 0.01M KIO3 solution were put to react with an excess of KI. 32.04ml of the sodium thiosulfate solution were needed to titrate the triiodide ions that were present . What is the molar concentration of thiosulfate in the solution?
9. ### Chemistry

(1)Make 500 ML of 4N H3PO4. How many grams will be needed?
10. ### Chemistry - percipitates

10g of AgI is dissolved in 100cm3 of water and Na2SO4(s) is added to the solution with the ppt.After about 10mins.25cm3 of the solution is taken and added Cl2 and heated.The remains Cl2 is removed and a small amount of KI(s) is added …

More Similar Questions