Grade 12Electric Current
1.An electrical current of 0.852 amperes is passed through a circuit that includes a Cr metal electrode in solution. As the current passes through the circuit, the Cr metal is dissolved, forming Cr3+ ions in solution.a.If the current is passed for 20.0 minutes, how many coulombs of charge have passed through the circuit?
b.Based on your answer to (a), how many electrons have passed through the circuit? (e = 1.60210-19 coulombs)
c.Based on your answer to (b), how many Cr3+ ions have been formed?
d.If 0.189 g Cr dissolved, how many moles of Cr were formed?
1.An electrical current of 0.852 amperes is passed through a circuit that includes a Cr metal electrode in solution. As the current passes through the circuit, the Cr metal is dissolved, forming Cr3+ ions in solution.
a.If the current is passed for 20.0 minutes, how many coulombs of charge have passed through the circuit?
b.Based on your answer to (a), how many electrons have passed through the circuit? (e = 1.60210-19 coulombs)
c.Based on your answer to (b), how many Cr3+ ions have been formed?
d.If 0.189 g Cr dissolved, how many moles of Cr were formed?
