Sodium thiosulfate Na2S2 03, the major component in photographic fixer solution,

Question

Sodium thiosulfate Na2S2 03, the major component in photographic fixer solution, reacts with silver bromide to dissolve it according to the following reaction AgBr(s) + 2Na2S203 (aq)Nag Ag(S203) 2 (aq) + NaBr(aq) Part A How many moles of NagS20s would be required to react completely with Express your answer using three significant figures. 0.540 g of AgBr? n= mol Submit My Answers Give Up Part B How many mL of 0.013 M Na2S203 contain this number of moles? Express your answer using two significant figures. mL Submit My Answers Give Up

Explanation / Answer

A)

mol of AgBr = mass/MW = 0.54/187.77 = 0.00287 mol of AgBr

ratio is

1 mol of AgBr = 2 mol of Na2S2O3

0.00287 mol --> 2*0.00287 = 0.00574 mol of Na2S2O3

B)

find V of 0.013 M

M = mol/V

V = mol/M

V = (0.00574 ) /0.013

V = 0.4415 L

V = 441.5 mL

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.