SAT chemistry - "Balancing redox equations using oxidation numbers"

<p>Hello,
I'm currently learning with my Barron's prep book for the SAT chemistry in october and just came across "Balancing redox equations using oxidation numbers" which is highly complex, so I asked myself if ETS really asks such difficult questions in a 1-hour-85-questions-test: Any ideas, anyone?</p>

<p>Don’t let it bother you;the redox questions ETS will ask will be pretty basic.You might not need any complex knowledge for solving redox questions.I used that same book and got a 750,i missed a question about acids.Just memorize the tricks you feel comfortable will.All the best.</p>

<p>Thank you very much!</p>