A simple redox question (former AP question)

The ferrous ion, Fe2+(aq) reacts with the permanganate ion, MnO4- (aq), in an acidic solution to produce the ferric ion, Fe3+(aq). A 6.893 g sample of ore was mechanically crushed and tehn treated with concentrated hydrochloric acid, which oxidized all of the iron in the ore to the ferrous ion, Fe2+(aq). Next the acid solution containing all of the ferrous ions was titrated with .100 M KMnO4 solution. The end point was reached when 13.899mL of the KMnO4 solution was used. a. write the oxidation half reaction b. write the reductio half reaction c. wride the balanced final redox reaction d. Identify the oxidizing agent, the reducing agent, the species being oxidized, and the species b... click for more

Simple problem set of multiple choice questions (3)

2. Find Eknot fora cell composed of silver and gold electrodes in 1 molar solutions of their respective ions: Eknot red Ag = .7991 volts, Eknot red Au = 1.68 volts a -.44 volts b 0 volts c .44 volts d .88 volts 5 A Zn|Zn2+||Cu2-|Cu cell has an Eknot of 1V. Calculate Gknot for the reaction (in kJ) b -193 c 1 d 193 e 386 6. Identify the oxidizing agent in teh following reaction: CH4 +2O2 -> CO2 +2H20

Molar and Concentration

If 4.oo mL of 0.0250 M CuSO4 is diluted to 10.0 mL with pure water, what is the molar concentration of copper (II) sulfate in the dilute solution? ______________________________ molar A 10.0-mL sample of 2.56 M HCL is diluted with water to 250. mL. What is the concentration of HCl in the diluted solution? Concentration of HCL______________________ What is the pH of the dilute solution? ph of the dilute solution_______________________

Mass and Molar

What mass of Na2CO3 in grams, is required for complete reaction with 50.0 mL of 0.125 M HNO3? Na2CO3(aq) = 2 HNO3(aq)-->2NaNO3(aq) = CO2(g) + H2O(l) mass________________grams

Molar

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