Answer to Question #60118 in Physical Chemistry for joseph orobiyi

Question

8 The magnitude of $K_{w}$ indicates that __________.
water autoionizes very slowly
water autoionizes very quickly
water autoionizes only to a very small extent
the autoionization of water is exothermic



9 Which of these is incorrect about the pH of a solution?
It is a measure of the acidity of the solution
The higher the pH, the more acidic the solution is
pH = -log$[H^{+}]$
an alkali has a higher pH value than an acid



10 The common-ion effect
promotes condensation
promotes evaporation.
increases solubility
reduces ionization.



11 Consider the equilibrium of AgCl(s) in water. What is the effect of
adding KCl?
The KCl has no effect
The reaction goes to the right
The reaction goes to the left
Silver chloride solubility increases

Answer 1

8. water autoionizes only to a very small extent.
9. The higher the pH, the more acidic the solution is.
10. The common ion effect reduces ionization.
11. If we consider the reaction of dissociation of AgCl(s), then with addition of KCl to the system, the reaction goes to the left. This is in accordance to Le-Chatelier principle.