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commercially available forms of EDTA are the free acid form, H4Y
• it is in the form of the disodium salt, Na2H2Y.2H2O. Why?
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- 18 19 20 21 22 23 24 Answer the questions in the table below about the shape of the methyl (CH3) anion. How many electron groups are around the central carbon atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. 0 What phrase best describes the arrangement of these electron groups around the central carbon atom? (You may need to use the scrollbar to see all the choices.) ✓ (choose one) linear bent T-shaped trigonal planar trigonal pyramidal square planar square pyramidal tetrahedral sawhorse trigonal bipyramidal octahedral Continue Two Column N....pages Kindergarten O....docx Grey Black and B....pdf 14 431 10 25 nola Mir Grey Black and B....pdf 26 Ⓒ2022 McGraw Hill LLC. AllA weak acid, HA, has a pKa = 6.2. If a solution of NaA(aq) is prepared, what does the pH of the solution need to be adjusted to in order to achieve the following ratios of deprotonated to protonated species? 1) [A-] / [HA] = 0.01 2) [A-] / [HA] = 10 3) [A-] / [HA] = 1 4) [A-] / [HA] = 106 Note: NaA is the sodium salt of , the conjugate base of HA. Assume NaA completely dissociates in water.Calculate the pKa of hypochlorous acid. The pH of a 0.015 M solution of hypochlorous acid has a pH of 4.64.
- Hydrogen peroxide (H2O2) can also form as a by-product during free radical oxidation reactions. H2O2 possesses a pKa value of 11.6. Based on this information, calculate the pH of a 1.80 L aqueous solution if 28 g of H2O2 is formed in a reaction.What kind of crystalline solid is Alumna (Al2O3)?What is the pH of a 0.20 M solution of CH3NH3NO3 at 25 °C? At this temperature, the Kp for CH3NH2 is 4.4 x 104 and the Ka for HNO3 is 2.4.
- Which atom is the central atom for H2CO?Calcium carbonate is insoluble in water. Yet, it dissolves in an acidic solution. Calculate the standard enthalpy, entropy, and Gibbs free energy change for the reaction between solid calcium carbonate and hydrochloric acid. What drives the reaction, the enthalpy change, or the entropy change?Can HCl be used in the place of sulfuric acid to synthesize Alum? Why or why not?
- Classify the following reaction: Mg(OH)₂(s) +H₂SO₄(aq) → 2 H₂O(l) + MgSO₄(aq)Which of the following statements about the reaction H2(g)+O2(g)→H2O(l)H2(g)+O2(g)→H2O(l) is true? (i) This is an example of an acid–base reaction. (ii) O2O2 is oxidized in this reaction. (iii) H2H2 is reduced in this reaction. Which of the following statements about the reaction is true? (i) This is an example of an acid–base reaction. (ii) is oxidized in this reaction. (iii) is reduced in this reaction. iii only i only ii and iii ii only None of them are true.Calculate the pH of: A 0.0850 molar solution of the intermediate (HA) form of threonine. It is a polyprotic question.