NY Regents Chemistry Electrochemistry — practice questions
20 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NY Regents Chemistry Electrochemistry in the app →A species is oxidized during a redox reaction. What has happened to it?One ampere of electric current equals what rate of charge flow?Iron(II) is converted to iron(III) during a redox reaction. What role does the iron(II) play?One half-reaction releases a single electron and the other consumes five. How must they be scaled before they Manganese moves from the 7+ state in permanganate to the 2+ state. How many electrons does each manganese centWhat does a galvanic cell do?At which electrode of an electrochemical cell does reduction take place?The salt bridge is lifted out of a working galvanic cell. What happens to the current?In standard cell notation, what is recorded on the far left?Why is platinum a common choice for an electrode that takes no part in the reaction?A cell has a silver cathode at 0.80 V and a copper anode at 0.34 V. What is the standard cell potential?A half-reaction is multiplied by three so the electrons balance. What happens to its standard reduction potentA cell pairs a gold half-cell at plus 1.498 V with a nickel half-cell at minus 0.257 V. What is the standard cWhat separates a primary battery from a secondary battery?A large D cell and a small AAA cell are both zinc carbon dry cells. How do they compare?A lead acid car battery is built from cells that each produce 2 V. How many cells give the usual 12 V?A galvanized iron sheet is scratched right down to the bare iron. What still protects the iron?Water is electrolyzed and both gases are collected. How do the two volumes compare?Standard potentials say oxygen should form at the anode when aqueous sodium chloride is electrolyzed, yet chloA current of 10.23 A flows through a silver plating cell for exactly one hour. How many moles of electrons pas