112. A standard solution of 0.243 M NAOH was used to determine the concentration of a hydrochloric acid solution. If 46.33 mL of NaOH is needed to neutralize 10.00 mL of the acid, what is the molar concentration of the acid? E) 2.43 M C) 1.13 M D) 2.26 M B) 0.888 M A) 0.0524 M 113. Automobile batteries use 3.0 MH2SO4 as an electrolyte. How much 1.20 M NAOH will be needed to neutralize 225 mL of battery acid? H2SO4(aq) A) 0.045 L NazSO4(aq) E) 1.1 L 2H2O(1) D) 0.90 L 2NAOH(aq) B) 0.28 L -> C) 0.56 L 114. Vinegar is a solution of acetic acid, CH3COOH, dissolved in water. A 5.54-g sample of vinegar was neutralized by 30.10 mL of 0.100 M NAOH. What is the percent by weight of acetic acid in the vinegar? A) 0.184% E) 9.23% C) 3.26% B) 1.63% D) 5.43% 115. A 0.00100 mol sample of Ca(OH)2 requires 25.00 mL of aqueous HCI for neutralization according to the reaction below. What is the concentration of the HC1? Equation: Ca(OH)2(s) A) 0.0200 M B) 0.0400 M C) 0.0800 M 2HC{(aд) CaCl2(ag) D) 4.00 x 10 M НаО() none of the above E) 116. How many milliliters of 1.58 M HCl are needed to react completely with 23.2 g of NaHCO3 (- = 84.02 g/mol)? HCl(aq) A) 638 mL NaHCO3(s) B) 572 mL NaCl(s) D) 276 mL -> Н.О() E) 175 mL CO2(g) C) 536 mL 117. Select the best statement relating to the following reaction: 2MNO2(s) + KCIO:(aq) + 2KOH(aq) → 2KMNO4(aq) + KCI(aq) + H2O(1) A) Mn in MnO2 is oxidized. B) O in KCIO3 is the oxidizing agent. C) K in KCIO3 is the reducing agent. D) H in KOH is oxidized. E) Cl in KC1O3 is the reducing agent. 118. In a redox reaction, electrons are transferred A) from the substance being oxidized to the reducing agent. B) from the oxidizing agent to the reducing agent. C) from the substance being reduced to the oxidizing agent. D) from the substance being oxidized to the substance being reduced. E) from the substance being reduced to the substance being oxidized. 52 99. Select the net ionic equation for the reaction between sodium chloride and mercury(1) nitrate. Hg:Cl2(s) 2NaCl(aq) A) Na (aq) B) Hg, (aq) C) NaCl(aq) D) Hg:(NO3)2(aq) E) Hgz (aq) Hg:(NO3)2(aq) NO3 (aq) 2C1 (aq) Na (aq) Hg"(aq) Hg2(s) NaNO3(aq) NaNO3(aq) Hg2Cl2(s) CI (aq) 2NO3 (aq) -> -> -> -> -> -> 100. Consider the reaction: 3Co"(aq)+ 6NO3 (aq) + 6Na*(aq)+ 2PO4 (aq) → Co3(PO4)2(s) + 6Na"(aq)+ 6NO; (aq) Identify the net ionic equation for this reaction. A) Na*(aq) + NO3 (aq) → NaNO3(aq) B) 3C02"(aq)+ NO3 (aq) + Na (aq) + 2PO4³"(aq) → Co3(PO4)2(s) + NaNO3(aq) C) 3Co"(aq)+ 6NO3 (aq) + 6Na"(aq) + 2PO4 (aq)→ Co3(PO4)2(s) + 6NaNO3(aq) D) 3C02"(aq)+ 2PO4 (aq) → Co3(PO4)2(s) E) None of the above is the correct net ionic equation. 101. Copper(II) sulfide, CuS, is used in the development of aniline black dye in textile printing. What is the maximum mass of CuS which can be formed when 38.0 mL of 0.500 M CuC12 are mixed with 42.0 mL of 0.600 M (NH4)2S? Aqueous ammonium chloride is the other product. A) 2.41 g E) 0.044 g D) 0.909 g C) 1.21 g B) 1.82 g 102. An acid A) produces hydroxide ions when dissolved in water. B) changes the color of phenolphthalein indicator from colorless to pink. C) donates electrons in an electron transfer reaction. D) donates protons in a proton transfer reaction. does none of the above. E) 103. A base A) causes phenolphthalein indicator to change from colorless to pink. B) donates a proton in a proton transfer reaction. C) accepts electrons in an electron transfer reaction. D) produces hydrogen ions in solution. E) does none of the above. 50