A student makes a voltaic cell by filling one small vessel with 1.0 M Cu2+ with a copper electrode and another small vessel with 1.0 M Zn2+ and a zinc electrode but has nothing for a salt bridge. The student then decides that since there is no salt bridge to simply mix the two solutions but keep the electrodes separate from each other and not touching. Which of the following will happen?   a redox reaction will happen at one electrode and no electricity produced   nothing will happen since there is no salt bridge   a brief large spike in voltage will be produced the moment they are mixed   there will be voltage produced but it will not last as long

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