Lead can be prepared from galena [lead(II) sulfide] by first roasting the galena in oxygen gas to form lead(II) oxide and sulfur dioxide. Heating the metal oxide with more galena forms the molten metal and more sulfur dioxide. (a) Write a balanced equation for each step. (b)Write an overall balanced equation for the process. (c) How many metric tons of sulfur dioxide form for every metric ton of lead obtained?
Chemical Kinetics Week 1: Kinetics: the study of rates of chemical reactions and reaction mechanisms A + B C + D o Reactions depend on molecular collisions Reaction Rates o Rate of reaction is change in concentration of a reactant/product over time Rate ¿ ∆Concentration ∆Time Units: M/s Rate > 0 Rate in Terms of Concentrations 2 A B o A disappears twice as fast as B appears since there are twice as many moles of A o Appearance/disappearance rates always correlate to their coefficients in a balanced reaction aA + bB dD + eE ∆[A]
