An electrolyte is an ionic compound that dissociates in solution to produce its constituent ions ad thus acquires the ability to conduct electricity. [citation needed]. @DavePhD was right when he suggested that you should trust your work. (choices: 3, 7, between 7 and 12, between 3 and 7) 2. The healthcare landscape has changed significantly in the past 12 years. [39], Boric acid is used in some expulsion-type electrical fuses as a de-ionization/extinguishing agent. In addition, the author(s) of the questions may not be the ones who provided the solutions to the problems. To see if this approximation is justified, we apply a criterion similar to what we used for a weak acid: [OH] must not exceed 5% of Cb. Why is cyclohexanone somewhat water soluble? The only difference is that we must now include the equilibrium expression for the acid. Explain. (a) Based on the conductivity of pure water (distilled water), does water exist predominantly as ions or as molecules? Explain. Explain. [24][25][26][27][28], At a 2010 European Diagnostics Manufacturing Association (EDMA) Meeting, several new additions to the Substance of Very High Concern (SVHC) candidate list in relation to the Registration, Evaluation, Authorisation and Restriction of Chemicals Regulations 2007 (REACH) were discussed. Why is acid added to the water not the water to the acid? For any of the common diprotic acids, \(K_2\) is much smaller than \(K_1\). Explain. Explain. \end{array} Dissociation equation for compounds in group In this section, we will develop an exact analytical treatment of weak acid-salt solutions, and show how the HH equation arises as an approximation. [34], Boric acid is also present in the list of chemical additives used for hydraulic fracturing (fracking) in the Marcellus Shale in Pennsylvania. Method one HendersonHasselbalch equation, $\mathrm{p}K_\mathrm{a} = -\log(K_\mathrm{a}) = 9.13668$, ${\mathrm{pH} = \mathrm{p}K_\mathrm{a} + \log \left(\frac{0.122}{0.200}\right) = 9.13668 + (-0.21467) = 8.92201}$, Method two Rice Table A link to the app was sent to your phone. E0.05-x.x.x The acidic and fundamental properties of both the acid and base are damaged by neutralization. Chemistry Stack Exchange is a question and answer site for scientists, academics, teachers, and students in the field of chemistry. 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. b) (2 pts) Do you expect this ratio to be the same, higher, or lower in surface seawater at pH 8.3? Nam risus ante, dapibus a molestie consequat, ultrices ac magna. For dilute solutions of weak acids, an exact treatment may be required. Is SrSO4 an electrolyte or a non-electrolyte? Several methods have been published for calculating the hydrogen ion concentration in solutions containing an arbitrary number of acids and bases. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. In your answer, include the balanced chemical equation for the reaction of SO3 with water. Explain how strong acid solutions conduct an electric current. Long-term intake of boric acid, on the other hand, has been linked to nausea, diarrhoea, and stomach discomfort. This animation shows how sodium chloride dissolves in water. It is also used in the manufacturing of ramming mass, a fine silica-containing powder used for producing induction furnace linings and ceramics. Because Kw is negligible compared to the CaKa products, we can simplify \Equation \(ref{3-4}\): \[[H^+] = \sqrt{1.8 \times 10^{6} + 1.7 \times 10^{-6}} = 0.0019\nonumber \], Which corresponds to a pH of \(\log 0.0019 = 2.7\), Note that the pH of each acid separately at its specified concentration would be around 2.8. Calculate the pH and the concentrations of all species in a 0.01 M solution of methylamine, CH3NH2 (\(K_b = 4.2 \times 10^{4}\)). It only takes a minute to sign up. Boric acid is widely used as an antiseptic for the treatment of minor cuts and burns. Did the drapes in old theatres actually say "ASBESTOS" on them? )[29][30], The primary industrial use of boric acid is in the manufacture of monofilament fiberglass usually referred to as textile fiberglass.
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