Question

To lift fingerprints from a crime scene, a solution of silver nitrate is sprayed on a surface to react with the sodium chloride left behind by perspiration. What is the molarity of a silver nitrate solution if 42.8 mL of it reacts with excess sodium chloride to produce 0.148 g of precipitate according to the following reaction? AgNO3(aq) + NaCl(aq) --> AgCl(s) + NaNO3 (aq) O 2.41 x 10-2M 0 2.29 x 102M O 6.66 x 10-2M 3.2 x 10-3M O 0.0229 M

Answer 1

Given Precipitation Reaction, AgNO₃ cas) + Nad(as) Age(s) & Narroz lag) Hell, Excess Nah usd, so that Ag Noz is the limiting Reagent. Form Equation, Imd As Noz produced ind Aga Asel, moleculae weight = 143.32 glad 0.1489 Agux i mole Ase = 0.0010 md 143.32 SASU and AS NO & imd Agu ind Agnoz Orcholomele o.colomde Agul x Imole Agu Agno. modaliliy As nos 0. colomde x LOVO 42.8 0.0 229M 1 option (6 is correct