Equal amounts of two acids—HCl and HCO2H (formic acid)—are placed in aqueous solution. When equilibrium has been achieved, the HCl solution has a much greater electrical conductivity than the HCO2H solution. Which reaction is more product-favored at equilibrium?
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Chapter 3 Solutions
Chemistry & Chemical Reactivity
- Complete each of these reactions by filling in the blanks. Predict whether each reaction is product-favored or reactant-favored, and explain your reasoning. (a) _________ (aq) + Br(aq) NH3(aq) + HBr(aq) (b) CH3COOH(aq) + CN(aq) ________ (aq) + HCN(aq) (c) ________ (aq)+H2O () NH3(aq) + OH(aq)arrow_forwardMost naturally occurring acids are weak acids. Lactic acid is one example. CH3CH(OH)CO2H(s)+H2O(l)H3O+(aq)+CH3CH(OH)CO2(aq) If you place some lactic acid in water, it will ionize to a small extent, and an equilibrium will be established. Suggest some experiments to prow that this is a weak acid and that the establishment of equilibrium is a reversible process.arrow_forwardDescribe any thermochemical (heat of reaction) evidence for the Arrhenius concept.arrow_forward
- Write the equilibrium constant expression for this reaction: 2 H* (aq) + C₂0 (aq) H₂C₂O4(aq) X Sarrow_forwardQ13) 0.35 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 8.0 L of solution. What is the pH of this solution? Q33) What is the value of the equilibrium constant for the following equilibrium?C6H5COOH(aq)+C6H5NH2(aq)⇌C6H5COO−(aq)+C6H5NH3+(aq)arrow_forwardWhat is the equilibrium expression for the following reaction? 2A(aq) + 3B(aq) ⇌ C(s)arrow_forward
- What is the equilibrium expression for the following reaction? CH4(g) + 2O2(g) ⇌ CO2(g) + 2H2O(g)arrow_forwardGiven the reaction: Ag2CrO4 (s) ⇌ 2 Ag+ (aq) + CrO42- (aq) If I add the following, will the system shift forward, backward or remain the same? Add more Ag+ Add CrO42- Add Ag2CrO4 (s) Add acid Add amoniaarrow_forwardWrite the equilibrium expression, Kc , for each of the following reactions. Ag2CrO4(s) ⇌ 2 Ag+(aq) + CrO42- (aq) 2 NO(g) + O2(g) ⇌ 2 NO2(g) HCN(aq) + OH-(aq) ⇌ CN- (aq) + H2O(l)arrow_forward
- Consider the following equilibrium: BaSO4 (s) Ba2+ (aq) + SO42 (aq); AH > 0 In which direction will the equilibrium shift (choose from: left, right, no effect) if: We add H2SO4, the equilibrium will shift to shift to equilibrium will shift to A We add heat, the equilibrium will A/ We add He(g), the Αarrow_forwardIn this Chemical Reaction at equilibrium: N H 3 + H B r ⟺ N H 4 + + B r − If you upset the equilibrium by adding NH3, what will happen to the reaction equilibrium.arrow_forwardFluoride anion and hydronium cation react to form hydrofluoric acid and water, like this: F (aq) + H₂O (aq)-HF (aq)+H₂O(l) At a certain temperature, a chemist finds that a 4.2 L reaction vessel containing an aqueous solution of fluoride anion, hydronium cation, hydrofluoric acid, and water at equilibrium has the following composition: compound F amount 0447 H,O HF HL₂0 Calculate the value of the equilibrium constant K, for this reaction. Round your answer to 2 significant digits. 0.287 3.79 E 597, D.P * 2arrow_forward
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