In a voltaic cell, electrons flow from the ________ to the ________.
A) salt bride, anode
B) anode, salt bridge
C) cathode, anode
D) salt bridge, cathode
E) anode, cathode
Question 2
The total number of orbitals in a shell is given by ________.
A) I2
B) n2
C) 2n
D) 2n + 1
E) 2l + 1
Question 3
The acid-dissociation constants of phosphoric acid (H3PO4 ) are Ka1 = 7.5 10-3, Ka2 = 6.2 10-8, and Ka3 = 4.2 10-13 at 25.0 C. What is the pH of a 2.5 M aqueous solution of phosphoric acid?
A) 1.82
B) 0.40
C) 2.51
D) 0.86
E) 0.13