<p> Name______Period______Chemistry Quiz</p><p>II. Matching ______1) Red in litmus ______7) pink in phenolphthalein ______2) [OH-] > [H+] ______8) vinegar a) acid ______3) pOH = 6.3 ______9) tastes sour ______4) NaNO3(aq) ______10) [OH-] = [H+] b) base -9 ______5) KC2H3O2 (aq) ______11) [H+] = 3.4 X 10 ______6) pH = 5.2 ______12) NH4Cl(aq) c) neutral</p><p>III. For each of the following reactions label the acid (a), the base (b), the conjugate acid (ca), and the conjugate base (cb).</p><p>- - 1) H2CO3 + OH HCO3 + H2O ______</p><p>+ - 2) CH3NH2 + H2O CH3NH3 + OH ______</p><p>+ - 3) HBr + H2O H3O + Br ______</p><p>IV. Problems. You must show your work for credit. 1) Given [OH-] = 1.5 x 10 –5, find [H+] , pH , pOH and tell if it is acidic or basic.</p><p>[H +] = pH = pOH = acidic or basic</p><p>2) Given pH = 5.7, find [OH-] , pOH , [H+] and tell if it is acidic or basic</p><p>[OH -] = pOH = [H+] = acidic or basic 3) Find the pH of a 0. 0045 M solution of NaOH. </p><p>3)</p><p>4) The pH of a 0.063 M solution of hypobromous acid (HBrO) is 4.95. Calculate Ka.</p><p>4)</p><p>5) How many mL of a 0.34 M of HCl are needed to neutralize 125 mL of a 0.11 M Ba(OH)2 ?</p><p>5)</p><p>6) What is the molar concentration of15 ml H3PO4 if it takes 25 mL of 0.85 M NaOH to neutralize the acid ?</p><p>6)</p><p>7 How many equilivants are in 6.34 L of a 0.75N solution of H3PO4</p><p>7)</p><p>8a) ______Mg(OH)2 + ______HBr 8b) ______Al(OH)3 + ______H2CO3 </p><p>9 If 25.00 mL of citric acid solution is titrated with 28.12 mL of 0.1718 N KOH, what is the concentration of citric acid? (hint: normality is a concentration unit!)</p><p>10)</p>