Concept explainers
(a)
Interpretation:
Stronger acid in the given set of compounds has to be selected.
Concept introduction:
Acid - ionization constant
Acids ionize in water. Strong acids ionize completely whereas weak acids ionize to some limited extent.
The degree to which a weak acid ionizes depends on the concentration of the acid and the equilibrium constant for the ionization.
The ionization of a weak acid
The equilibrium expression for the above reaction is given below.
Where,
Smaller value of
(b)
Interpretation:
Stronger acid in the given set of compounds has to be selected.
Concept introduction:
Acid - ionization constant
Acids ionize in water. Strong acids ionize completely whereas weak acids ionize to some limited extent.
The degree to which a weak acid ionizes depends on the concentration of the acid and the equilibrium constant for the ionization.
The ionization of a weak acid
The equilibrium expression for the above reaction is given below.
Where,
Smaller value of
Large value of
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Chapter 17 Solutions
EP ORGANIC CHEMISTRY-OWL V2 ACCESS
- 3. For the following acid - base reaction, (a) predict the products; (b) identify the Bronsted acid, Bronsted base, conjugate acid, and conjugate base; (c) use curved arrows to show the flow of electron pairs in the reaction. CH3 CH2C-OH + NaNHaarrow_forwardWhat is the pH of a 0.20 M solution of CH3NH3NO3 at 25 °C? At this temperature, the K₁ for CH3NH₂ is 4.4 x 10-4 and the Ka for HNO3 is 2.4.arrow_forwardWhy is K2HPO4 a weaker base than KOH?arrow_forward
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- For each conjugate acid-base pair, identify the first species as an acid or a base and the second species as its conjugate acid or base. In addition, draw Lewis structures for each species, showing all valence electrons and any formal charge. (a) NH4+ NH3arrow_forward3) Calculate the pH of a 27 mg/L solution of hydrocyanic acid (HCN). The pKa of hydrocyanic acid is 9.3.arrow_forwardPhosphoric acid is a tri-acid. It is often associated to biological molecules (i.e. proteins, lipids) in the form of phosphate group. Its ionisation state depends on the pH of the solution and of its pKa values. Data: pka₁ = 2.1; pKa₂ = 7.2 ; pka3 = 12.4 1- What are the forms present at physiological pH (7.4) ? 2- Indicate which form is the most prominent.arrow_forward
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