Cracking the SAT Chemistry Subject Test

For NH 3 (aq): KbNH 3 = [NH 4 +][OH−]/[NH 3 ] Rearranging each so that [NH 4 +] is by itself on the left yi ...

Example: Na+ (the conjugate acid of NaOH) is neutral. The conjugate base of a strong acid is ...

pH = pKa + log Unfortunately, people often remember this equation incorrectly, either because they’re use ...

pOH = pKb + log This passes the above test because increasing the amount of acid [HA] should always incr ...

pH = 4.7 + log Fourth, solve it. pH = 4.7 + log = 4.7 + log 10−1 = 4 ...

pH = pKa + log Examining this version of the Henderson-Hasselbalch equation reveals some additiona ...

ACID-BASE TITRATIONS An acid-base titration is an experimental technique used to acquire information about a ...

also called the inflection and the end point. You can locate the equivalence point by eyeballing the titration curve: ...

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Determining Concentration As we said earlier, the equivalence point is that point in the titration where ...

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Since the equivalence point for this titration curve lies above pH = 7 (around pH = 9), and the ...

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The half-equivalence point is an important location on the titration curve because at this point, equa ...

pKb = pOH(at the half-eq point) = 14 – pH(at the half-eq point) For the titration curve we just showed, the u ...

Incidentally, the test writers will want you to know how we add acid to base or base to acid, and t ...

DRILL 1 Question Type A Questions 1–4 refer to the following. (A) HBr(aq) (B) NH 3 (aq) (C) H 2 O(l) (D) HF(aq) (E) ...

102. ...

Question Type C HNO 3 (aq) + OH−(aq) H 2 O(l) + NO 3 − (aq) In the reaction above, which species is t ...

A titration experiment is conducted in which 15 milliliters of a 0.015 M Ba(OH) 2 solution is added t ...