Question 1
Which of the following are Lewis bases?
I) BCl
3
II) H
-
III) H
2O
IV) NH
3 V) AlCl
3◦ II), III) and IV)
◦ I), II), and III)
◦ III), IV) and V)
◦ I), II), and V)
◦ I), II), and IV)
Question 2
Which of the following is a logical inference from the fact that a 0.10 M solution of potassium acetate, KC
2H
3O
2, is less alkaline than a 0.10 M solution of potassium cyanide, KCN?
◦ Hydrocyanic acid is a weaker acid than acetic acid.
◦ Cyanides are less soluble than acetates.
◦ Hydrocyanic acid is less soluble in water than acetic acid.
◦ Acetic acid is a weaker acid than hydrocyanic acid.
◦ 0.10 M potassium acetate is more concentrated than 0.10 M potassium cyanide.
Sodium Potassium Pump
cyclic nucleotide regulated potassium channel
Integral Solution
Function, even or odd, solution
With solution
With solution