Describe the process of ionization using hydrogen chloride, HCL, and water, H2O. $K_\mathrm{a} = \ce{\frac{[\ce{H3O}][\ce{A-}]}{[\ce{HA}]}}$ Various preparations can be used to treat some kinds of otitis externa (ear infection) in both humans and animals. Substituting Equation \(\ref{5-4}\) into Equation \(\ref{5-5}\) yields an expression for [A]: \[[A^] = C_b + [H^+] [OH^] \label{5-6}\], Inserting this into Equation \(\ref{5-3}\) and solving for [HA] yields, \[[HA] = C_b + [H^+] [OH^] \label{5-7)}\]. Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? The solubility of H3BO3 in water is temperature-dependent. It is instructive to compare this result with what the quadratic approximation would yield, which yield \([H^+] = 6.04 \times 10^{7}\) so \(pH = 6.22\). The answer I got using both of these methods, $\mathrm{pH} = 8.92$, is not correct. In Group C, do all four compounds appear to be molecular, ionic, or molecular . 4.Write an equation for the dissociation of each of the compounds in Group B. Explain how. Pellentesque dapibus eff
sectetur adipiscing elit. . 5. Boric acid, H3B03, has an acid dissociation constant . Pellentesque dapibus efficitur laoreet. H3BO3H3BO2-+ These generally involve iterative calculations carried out by a computer. To eliminate [HA] from Equation \(\ref{2-2}\), we solve Equation \(\ref{2-4}\) for this term, and substitute the resulting expression into the numerator: \[ K_a =\dfrac{[H^+]([H^+] - [OH^-])}{C_a-([H^+] - [OH^-]) } \label{2-5}\], The latter equation is simplified by multiplying out and replacing [H+][OH] with Kw. Boric Acid is a monobasic Lewis acid with the chemical formula H3BO3. The larger the Ka, the stronger the acid and the higher the H + concentration at equilibrium. In your answer, include the balanced chemical equation for the reaction of SO3 with water. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. result in additional ions in solution as it did in Group A? Pellentesque dapibus efficitur laoreet. These very high activity coefficients also explain another phenomenon: why you can detect the odor of HCl over a concentrated hydrochloric acid solution even though this acid is supposedly "100% dissociated". Why do conductivity values of tap water and deionized water differ? In this section, we will restrict ourselves to a much simpler case of two acids, with a view toward showing the general method of approaching such problems by starting with charge- and mass-balance equations and making simplifying assumptions when justified. We will start with the simple case of the pure acid in water, and then go from there to the more general one in which strong cations are present. How does electrolyte conductivity affect corrosion rates? which yields a positive root 0.0047 = [H+] that corresponds to pH = 2.3. Explain. Use a diagram explain how LiF dissolves in water. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. How does a molecular solid such as sugar dissolve in water? Is CaI2 classified as a strong electrolyte? You create a new H3BO3 solution by dissolving exactly 420 mmol m-3 of H3BO3 in pure water. Write an equation for the dissociation of each of the compounds in Group B. The solution of orthoboric acid and borax in 4:5 ratio is used as a fire retarding agent of wood by impregnation.[32]. Fusce dui lectus, congue
sectetur adipiscing elit. This can be indicated with a double headed arrow that favors the reverse reaction: a Question How is it that the salt KHSO4 is able to act as an acid Catalyst for dehydration? There are no histories of long-term respiratory consequences due to exposure to borax as per studies. Our experts can answer your tough homework and study questions. [17], Boric acid also dissolves in anhydrous sulfuric acid according to the equation[7], Boric acid reacts with alcohols to form borate esters, B(OR)3 where R is alkyl or aryl. Select the correct answer and click on the Finish buttonCheck your score and answers at the end of the quiz, Visit BYJUS for all Chemistry related queries and study materials, Your Mobile number and Email id will not be published. The system must be wrong. Non-electrolytes do not associate in solution and, therefore, do not conduct electricity. What is the equation of the reaction between H3BO3(aq - ResearchGate \text{E} & 0.200-x & x & 0.122+x Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Legal. Boric acid may be dissolved in spent fuel pools used to store spent fuel elements. How can I control PNP and NPN transistors together from one pin? It can also be noted that boric acid is sparingly soluble in pyridine and slightly soluble in acetone. By increasing boric acid concentration in the reactor coolant, the probability that a neutron will cause fission is reduced. NH 4 + ( a q) + H 2 O ( l) H 3 O + ( a q) + NH 3 ( a q) K a = K w / K b. [22], According to the CLH report for boric acid published by the Bureau for Chemical Substances Lodz, Poland, boric acid in high doses shows significant developmental toxicity and teratogenicity in rabbit, rat, and mouse fetuses as well as cardiovascular defects, skeletal variations, and mild kidney lesions. Get a free answer to a quick problem. Long-term intake of boric acid, on the other hand, has been linked to nausea, diarrhoea, and stomach discomfort. [23] As a consequence in the 30th ATP to EU directive 67/548/EEC of August 2008, the European Commission decided to amend its classification as reprotoxic category 2, and to apply the risk phrases R60 (may impair fertility) and R61 (may cause harm to the unborn child).
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