{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lecture notes2 - Chem 321 Quiz 2 1(2 ea Name Answer Key...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 321 Quiz 2 Name Answer Key 1. Identify what type of aqueous solution (acidic, basic or neutral) each of the following substances forms. Explain your choice. (2 ea) NaClO 4 - neutral Na + is pH neutral and ClO 4 - is pH neutral (conjugate base of a strong acid) KF - basic F - is the conjugate basic of the weak acid HF and K + is pH neutral [CH 3 NH 3 ]Cl - acidic CH 3 NH 3 + is the conjugate acid of the weak base CH 3 NH 2 (analogous to NH 4 + /NH 3 ) and Cl - is pH neutral (conjugate base of a strong acid) 2. Calculate the pH of a solution containing 0.200 M K 2 HPO 4 and 0.085 M K 3 PO 4 . (4) Note that a HPO 4 2- /PO 4 3- buffer is formed (pH ~ pK a3 = 12.38). Since both “10 -3 rules” apply, the Henderson-Hasselbalch equation can be used.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}