(a) Interpretation: The value of change in enthalpy for the reaction between NaOH and HCl needs to be determined. Concept introduction: For a reaction as follows: A ⇄ B + C The change in enthalpy can be calculated as follows: Δ H r e a c t i o n = Δ H B + Δ H C − Δ H A Or, change in enthalpy of reaction is equal to difference in the sum of enthalpy of formation of product and sum of enthalpy of formation of reactants.
(a) Interpretation: The value of change in enthalpy for the reaction between NaOH and HCl needs to be determined. Concept introduction: For a reaction as follows: A ⇄ B + C The change in enthalpy can be calculated as follows: Δ H r e a c t i o n = Δ H B + Δ H C − Δ H A Or, change in enthalpy of reaction is equal to difference in the sum of enthalpy of formation of product and sum of enthalpy of formation of reactants.
Solution Summary: The author explains the value of change in enthalpy for the reaction between NaOH and HCl.
The value of change in enthalpy for the reaction between NaOH and HCl needs to be determined.
Concept introduction:
For a reaction as follows:
A⇄B+C
The change in enthalpy can be calculated as follows:
ΔHreaction=ΔHB+ΔHC−ΔHA
Or, change in enthalpy of reaction is equal to difference in the sum of enthalpy of formation of product and sum of enthalpy of formation of reactants.
Interpretation Introduction
(b)
Interpretation:
The value of change in enthalpy for the reaction between NaOH and HF needs to be determined.
Concept introduction:
For a reaction as follows:
A⇄B+C
The change in enthalpy can be calculated as follows:
ΔHreaction=ΔHB+ΔHC−ΔHA
Or, change in enthalpy of reaction is equal to difference in the sum of enthalpy of formation of product and sum of enthalpy of formation of reactants.
The pH of a 0.1 M solution of a monobasic acid P is 1.0 while the pH of a 0.2 M solution of another monobasic acid Q is 3.4 .(a) Which, P or Q, is a more concentrated solution?(b) Which, P or Q, is a stronger acid?(c) Which, P or Q, will react faster when a piece of magnesium is dropped to them? (d) Which, P or Q, contains more H+(aq) ions in 50 cm3solution?(e) Which, P or Q or both, can be neutralized by an alkali?(f) Name an instrument to measure the pH of the above solutions.(g) Is P a strong acid? Explain your answer.
25) Consider 0.14 M monoprotic acid (HA) that is 12% ionized.
(a) Show the reaction of dissociation (ionization) of HA
(b) Calculate the [H+] in the solution.
(c) Calculate the Ka of HA.
Hypochlorous acid, HOCl, is a weak acid having a pKa = 7.46. (a) Show the balanced chemical equation for the hydrolysis of water by OCl- (aq). (b) Compute the value of pKb for aqueous hypochlorite ion. (c) If [OCl-] = 0.050 M, then what is the pH of this aqueous solution?
(a)
(b)
(c)
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell