25 Solubility - ID a buffer when you see one Which of the...

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1 1 ID a buffer when you see one. Which of the following would form a buffer solution when added to 1 L of 0.2 M sodium hydroxide (NaOH). If none form a buffer, respond E. A) 0.1 mole of acetic acid, CH 3 COOH B) 0.2 mol of hydrochloric acid, HCL C) 0.1 mol of sodium acetate, NaOOCCH 3 D) 0.3 mole of acetic acid, CH 3 COOH E) None of the resulting solutions would be a buffer. See QRT 17.28 3 Today’s To Do Explain why “like dissolves like” in terms of enthapy and entropy changes when one substance dissolves in another. Explain why the solubility of a solid in a liquid generally increases with increasing temperature while the solubility of a gas generally decreases. Explain the differences in solubilities of sodium chloride (NaCl) and silver chloride (AgCl) in water at 300K.
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2 4 Why are some things soluble and others are not in a given solvent? Like dissolves like! Ethanol in water – YES Both have OH groups and hydrogen bonding Oil in water – NO Oil has long hydrocarbon chains No hydrogen bonding Where does this rule come from? 6 Why are some things soluble and others are not in a given solvent? For solubility need a large equilibrium constant. K ~ (solution) / (solute)(solvent) Forming the solution should Be exothermic, H o <0 Solution has lower energy. May or may not be the case.
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25 Solubility - ID a buffer when you see one Which of the...

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