what is the predominant solute ion or molecule (A-, OH-, H+, or HA) present in a...
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what is the predominant solute ion or molecule (A-, OH-, H+, or HA)
present in a...
Conjugate Pairs According to the Bransted-Lowry theory, an acid is any substance (molecule or ion) that...
Conjugate Pairs According to the Bransted-Lowry theory, an acid is any substance (molecule or ion) that can transfer a proton (H' ion) to another substance, and a base is any substance that can accept a proton Acid-base nreactions ane protor-bansfer neactions as follows Part A The following equation shows the equilibrium in an aqueous solution of ethylamine HA + BH +A CH,NH, (aq) + H,O) C,H,NH, '(aq) + OH (aq) base acid base acid Which of the following represents a...
Mg(OH)2 is a sparingly soluble salt with a solubility product, Kp, of 5.61 x 10-1 t...
Mg(OH)2 is a sparingly soluble salt with a solubility product, Kp, of 5.61 x 10-1 t is used to control the pH and provide nutrients in the biological The common-ion effect is an application of Le Châtelier's principle, which states that an equilibrium system that is stressed will work to alleviate that stress and reestablish equilibrium. (microbial) treatment of municipal wastewater streams. What is the ratio of solubility of Mg(OH)2 dissolved in pure H2O to Mg(OH)2 dissolved in a 0.190M...
Since only salt NaA and H2O present in the solution so H+ ion comes from hydrolysis...
Since only salt NaA and H2O present in the solution so H+ ion comes from hydrolysis of NaA to give NaOH and HA and dissociation of H2O. Hence we calculate pH by formula for salt formed by weak acid and strong base.
Part C What is the conjugate acid of HPO42- ? Express your answer as a chemical...
Part C What is the conjugate acid of HPO42- ? Express your answer as a chemical formula. View Available Hint(s) Submit Previous Answers Request Answer According to the Brønsted-Lowry theory, an acid is any substance (molecule or ion) that can transfer a proton (H" ion) to another substance, and a base is any substance that can accept a proton. Acid-base reactions are proton-transfer reactions, as follows: + HA + acid B base = BH acid A. base Chemical species whose...
1. A 0.100 M solution of the weak acid HB has a pH of 3.00. What...
1. A 0.100 M solution of the weak acid HB has a pH of 3.00. What are the [H+], [B-], and Ka for this acid? 2. A solid acid is dissolved in water. Half the solution is titrated to a phenolphthalein end point with NaOH solution. The neutralized and acid solutions are then mixed and the pH of the resulting solution is found to be 4.60. Find Ka of the solid acid. 3. Assuming your buffered solution contains acetic acid,...
Strong base is dissolved in 755 mL of 0.400 M weak acid (Kg = 4.71 x...
Strong base is dissolved in 755 mL of 0.400 M weak acid (Kg = 4.71 x 10-5 M) to make a buffer with a pH of 4.10. Assume that the volume remains constant when the base is added. HA(aq) + OH(aq) + H20(1) + A (aq) Calculate the pK, value of the acid and determine the number of moles of acid initially present. pKa = moles of weak acid: mol HA Enter numeric value When the reaction is complete, what...
Strong base is dissolved in 635 mL of 0.600 M weak acid (K, = 3.03 x 10-5) to make a buffer with a pH of 4.08. Assu...
Strong base is dissolved in 635 mL of 0.600 M weak acid (K, = 3.03 x 10-5) to make a buffer with a pH of 4.08. Assume that the volume remains constant when the base is added. HA(aq) + OH(aq) →H,O(1) + A (aq) Calculate the pK, value of the acid, and determine the number of moles of acid initially present. pk = initial armount: initial amount: mol HA When the reaction is complete, what is the concentration ratio of...
3. 0.7253 g sample containing an unknown weak acid HA was dissolved in 50 mL water...
3. 0.7253 g sample containing an unknown weak acid HA was dissolved in 50 mL water and titrated against 0.1555 M NaOH, requiring 48.11 mL to of NaOH to reach the end-point. During the titration reaction, the pH of the solution is 3.77 when half of the HA is neutralized and the equivalence-point pH is 8.33. (a) State two ways to standardize the NaOH used in the titration. (b) Suggest and explain an indicator that can be used in the...
A. What is the pH of an aqueous solution with a hydrogen ion concentration of H...
A. What is the pH of an aqueous solution with a hydrogen ion concentration of H 20 x 10-'M? pH = B. What is the hydroxide ion concentration, OH"), in an aqueous solution with a hydrogen ion concentration of (H) = 2.0 x 10-'M? [OH-] = C. A monoprotic weak acid, HA, dissociates in water according to the reaction HA(aq) H(aq) + A+ (aq) 3.00 x 10-M, and The equilibrium concentrations of the reactants and products are (HA) = 0.140...
Strong base is dissolved in 635 mL of 0.600 M weak acid (?a=4.31×10−5) to make a...
Strong base is dissolved in 635 mL of 0.600 M weak acid (?a=4.31×10−5) to make a buffer with a pH of 4.20. Assume that the volume remains constant when the base is added. HA(aq)+OH−(aq)⟶H2O(l)+A−(aq) Calculate the p?a value of the acid and determine the number of moles of acid initially present. p?a= mol HA= When the reaction is complete, what is the concentration ratio of conjugate base to acid? [A−][HA]= How many moles of strong base were initially added? mol...
Conjugate Pairs According to the Bransted-Lowry theory, an acid is any substance (molecule or ion) that can transfer a proton (H' ion) to another substance, and a base is any substance that can accept a proton Acid-base nreactions ane protor-bansfer neactions as follows Part A The following equation shows the equilibrium in an aqueous solution of ethylamine HA + BH +A CH,NH, (aq) + H,O) C,H,NH, '(aq) + OH (aq) base acid base acid Which of the following represents a...
Mg(OH)2 is a sparingly soluble salt with a solubility product, Kp, of 5.61 x 10-1 t is used to control the pH and provide nutrients in the biological The common-ion effect is an application of Le Châtelier's principle, which states that an equilibrium system that is stressed will work to alleviate that stress and reestablish equilibrium. (microbial) treatment of municipal wastewater streams. What is the ratio of solubility of Mg(OH)2 dissolved in pure H2O to Mg(OH)2 dissolved in a 0.190M...
Part C What is the conjugate acid of HPO42- ? Express your answer as a chemical formula. View Available Hint(s) Submit Previous Answers Request Answer According to the Brønsted-Lowry theory, an acid is any substance (molecule or ion) that can transfer a proton (H" ion) to another substance, and a base is any substance that can accept a proton. Acid-base reactions are proton-transfer reactions, as follows: + HA + acid B base = BH acid A. base Chemical species whose...
Strong base is dissolved in 755 mL of 0.400 M weak acid (Kg = 4.71 x 10-5 M) to make a buffer with a pH of 4.10. Assume that the volume remains constant when the base is added. HA(aq) + OH(aq) + H20(1) + A (aq) Calculate the pK, value of the acid and determine the number of moles of acid initially present. pKa = moles of weak acid: mol HA Enter numeric value When the reaction is complete, what...
Strong base is dissolved in 635 mL of 0.600 M weak acid (K, = 3.03 x 10-5) to make a buffer with a pH of 4.08. Assume that the volume remains constant when the base is added. HA(aq) + OH(aq) →H,O(1) + A (aq) Calculate the pK, value of the acid, and determine the number of moles of acid initially present. pk = initial armount: initial amount: mol HA When the reaction is complete, what is the concentration ratio of...
A. What is the pH of an aqueous solution with a hydrogen ion concentration of H 20 x 10-'M? pH = B. What is the hydroxide ion concentration, OH"), in an aqueous solution with a hydrogen ion concentration of (H) = 2.0 x 10-'M? [OH-] = C. A monoprotic weak acid, HA, dissociates in water according to the reaction HA(aq) H(aq) + A+ (aq) 3.00 x 10-M, and The equilibrium concentrations of the reactants and products are (HA) = 0.140...
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