FSC Part 1 Chemistry Chapter 9 Solutions Online Test

Acid-Base Chemistry

Sr. #	Questions	Answers Choice
1	The solubility product of AgCl is 2.0 x 10^-10 mol2 dm-6. The maximum concentration of Ag+ ions in the solution is.	2.0 x 10<sup>-10</sup> mol dm<sup>-3</sup> 1.41 x 10<sup>-5</sup> mol dm<sup>-3</sup> 1.0 x 10<sup>-10</sup> mol dm<sup>-3</sup> 4.0 x 10<sup>-20</sup> mol dm<sup>-3</sup>
2	The solubility prodct of Pb SO4 is	1.6 x 10<sup>-8</sup> 1.4 x 10<sup>-4</sup> 1.6 x 10<sup>-6</sup> 1.6 x 10<sup>-2</sup>
3	In a titration, the equivalence point is when	No acid left pH = 7 Moles of acid= moles of base Buffer forms
4	A substance that changes color with pH is a	Orange Red Yellow Blue
5	A salt that hydrolyzes in water in from	Strong acid and base Weak acid or base None Both strong
6	CH3COONA is a salt of.	Strong acid+ Strong base Weak acid+Strong base None Weak base+Weak acid
7	A salt from stron acid+weak base gives.	Neutral solution Acidic solution Precipitate Basic solution
8	Which one of the following is not the applicatio of solubility products.	Determination of solubility from Ksp Common ion effect Predicting precipitation Dissociation of bonds
9	The pKa value for HCOOH is.	4.74 3.78 4.78 4.24
10	A buffer solution is.	Stron acid+ strong base Weak Acid + Its salt Weak base + Its salt Weak base+ salt of strong acid
11	The suppression of ionization of a weak electrolyte by adding common ion is	Le-Chatelier's effect Common ion effect Auf Bau effect Hund's rule
12	Which one of the following compound is added in purficatio of NaCl in common ion efffect.	HCl H2SO4 HNO3 HF
13	The Ka of a weak acid is 10-5 its pKa is	2 3 5 10
14	Which is a weak acid	HNO3 H2SO4 HF HCl
15	Strong bases have	Low Kb High Kb Low pH High Ka
16	An acid with low Ka value is.	Strong Weak Base Neutral
17	A base taht ionizes completely in aqueous solution is called.	Strong base Weak base Conjugate acid Neutral