Created by StemPy LabA bottle of antiseptic lotion is labelled 5 % (w/v). What does the label tell you?
← All Quizzes
← Excess silver powder is shaken at 298 K with a solution of iron(III) perchlorate, [Fe³⁺] = 0.100 mol L⁻¹, in dilute perchloric acid. The acid stops the iron(III) ions from hydrolysing, and perchlorate does not react. The reaction is Ag(s) + Fe³⁺(aq) ⇌ Ag⁺(aq) + Fe²⁺(aq). At the start there are no Ag⁺ or Fe²⁺ ions. Take E°(Fe³⁺/Fe²⁺) = 0.77 V, E°(Ag⁺/Ag) = 0.80 V and 2.303RT/F = 0.059 V. Treat the solution as ideal, and take its volume as fixed. The mixture is left until it reaches equilibrium. What is [Ag⁺] at equilibrium? Give the answer in mmol L⁻¹, to two decimal places.A test finds 3 ppm of nitrate in a water sample. How much nitrate is in 1 kg of the water? →
Discussion (0)
Log in to join the discussion.
Loading…