Concept explainers
(a)
Interpretation:
The
Concept Introduction:
Autopyrolysis is a reaction in which proton is transfer from one molecule to another molecule of same kind. Autopyrolysis constant can be expressed by the equation shown below;
For pure water the value of autopyrolysis constant is equal to
Negative logarithm of the concentration of hydronium ion is the
(b)
Interpretation:
The
Concept Introduction:
Negative logarithm of the concentration of hydronium ion is the
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Chemical Principles: The Quest for Insight
- When carbon dioxide dissolves in water it reacts to produce carbonic acid, H2CO3(aq), which can ionize in two steps. H2CO3(aq)HCO3(aq)+H+(aq)Kc1=4.2107HCO3(aq)CO32(aq)+H+(aq)Kc2=4.81011 Calculate the equilibrium constant for the reaction H2CO3(aq)CO32(aq)+2H+(aq)arrow_forwardChemists working with fluorine and its compounds some- times find it helpful to think in terms of acid-base reac- tions in which the fluoride ion (F¯) is donated and ассеpted. (a) Would the acid in this system be the fluoride donor or fluoride acceptor? (b) Identify the acid and base in each of these reactions: CIF;O2 + BF; CIF,O, · BF, -- TiF, + 2 KF – K2[TiF,]arrow_forwardA student uses 7.500 grams of oxalic acid (H₂C₂O₄) to make 250.0 cm³ of solution in a volumetric flask. She then transfers 20.0 cm³ of the solution to a conical flask with a pipette. What is the concentration in mol·dm⁻³ of the oxalic in the conical flask?arrow_forward
- Calculate the concentration of C6H,O6 in an aqueous solution of 4.88x102 M ascorbic acid, H,CgH,O6 (aq).arrow_forwardThe pH of an aqueous solution of 0.1690 M hydrosulfuric acid, H₂S (aq), isarrow_forwardWhat volume of 0.250 M HCl(aq) will completely react with 50.0 mL of 0.115 M NaOH(aq)? Write the balanced reaction and show the stoichiometry. Write the reaction of acetate ion in water. Predict the approximate pH of a solution with acetate ion present.arrow_forward
- (a) A student carries out a titration to find the concentration of some sulfuric acid. The student finds that 25.00 cm of 0.0880 mol dm aqueous sodium hydroxide, NaOH, is neutralised by 17.60 cm of dilute sulfuric acid, H2SO4. -3 H2SO4(aq) + 2NaOH(aq) → Na2SO,(aq) + 2H2O(1) (i) Calculate the amount, in moles, of NaOH used. answer = mol (ii) Determine the amount, in moles, of H2SO4 used. answer mol (ii) Calculate the concentration, in mol dm3, of the sulfuric acid. answer = mol dm3 (b) After carrying out the titration in (a), the student left the resulting solution to crystallise. White crystals were formed, with a formula of Na2SO4•x H2O and a molar mass of 322.1 g mol. What term is given to the x H2O' part of the formula? Using the molar mass of the crystals, calculate the value of x. answer =arrow_forwardThe following two reactions involve proton transfer. In each reaction, identify the acid and the base. Identify the conjugate base of the acid, and the conjugate acid of the base. Draw Lewis electron dot diagrams for each molecule, and describe the rear- rangement of bonding in the reaction as nonbonding electron pairs become cova- lently shared pairs and vice versa. (a) H¿O(€) + NH (aq) → H;0* (aq) + NH3(aq) (b) CH;CH;OH(aq) + NH7 (aq) → CH;CH;O¯(aq) + NH3(aq)arrow_forwardA volume of 125.0 mL of 0.565 M KOH (aq) is diluted with 425.0 mL of pure water. What is the final concentration (in molarity) of KOH? Report to three significant figures.arrow_forward
- If weak acids ionize only a few percent in aqueous solution, why is it possible to fully neutralize a weak acid by reacting it with the stoichiometric equivalent of sodium hydroxide solution, NaOH(aq)?arrow_forwardThe following reaction represents the process known as photosynthesis: 6CO₂(g) + 6H₂O(l) + sunlight → C₆H₁₂O₆(aq) + 6O₂(g). Is photosynthesis a redox reaction? Justify your answer using redox principles.arrow_forward1) The net ionic equation for formation of an aqueous solution of Nil2 accompanied by evolution of Coz gas via mixing solid NICO3 and aqueous hydriodic acid is A) 2NICO, (s) + HI (aq) → 2H,O (1) + CO, (g) + 2Ni (aq) B) NİCO, (s) + I- (aq) → 2H,O (1) + CO, (g) + Ni* (aq) + HI (aq) C) NICO, (s) + 2H* (aq) → H,O (1) + CO, (g) + Ni* (aq) D) NICO, (s) + 2HI (aq) → 2H,O (1) + CO, (g) + Nil (aq) E) NICO, (s) + 2HI (aq) → H,O (1) + CO, (g) + Ni* (aq) + 21 (aq) Answer: C 2) The net ionic equation for formation of an aqueous solution of Al(NO,), via mixing solid Al(OH); and aqueous nitric acid is A) Al(OH), (s) + 3HNO, (aq) 3H,0 (1) + Al(NO,), (aq) B) Al(OH), (s) + 3NO; (aq) → 3OH- (aq) + Al(NO,); (aq) C) Al(OH), (s) + 3NO,"(aq) → 30H- (aq) + Al(NO,), (s) D) Al(OH), (s) + 3H' (aq) → 3H,0 (1) + Al³* (aq) E) Al(OH), (s) + 3HNO, (aq) → 3H,0 (1) + Al* (aq) + NO, (aq) Answer: D 3) The balanced reaction between aqueous nitric acid and aqueous strontium hydroxide is Sr(NO3)2 (aq) + H2 (g) A) HNO3 (aq)…arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning