Question

100.0 mL of 0.100 M sodium sulfide is mixed with 100.0 mL of 0.100 M chromium (III) nitrate. Calculate the mass of solid that forms and the concentration of the remaining species in solution: assume complete precipitation.

Answer 1

→ 6 MOMOA + Cog Sa(s). | 3 N92S + 2 C0CNO3), loom) Toom! Dolm 0.1m lo mimole Tommole 2 male of (o (NO3), required 3 males of Mars :: lo male of cocMOz), would required - 3x10 = 15male of Mars Naas is limiting reagent 2 3 male of Mass oftere reaction frodence imale of Co, Sz i lommale of Ma, s cueill form o mimale of Cozefa mimale of cozSz = temimde masse 10x10*** (2x 54 + 3x 32) = 0.68 gram mimale of Col Mogla semaining = 3.33 m. male Conch 0.033 M. remaining = J 3-33 100