Prepare this aqueous mixture: 300 mL 0.1 M HNO2 & 100 mL 0.1 M PO4 3- a. HNO2 is in excess & PO43- is polyprotic. Give all acid-base reactions that can occur when excess HNO2 is mixed w/ PO4 3-. (3 reactions) b. Calculate Keq for the individual reactions for (a). For each, are reactants or products favored at equilibrium?
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- 3. Complete neutralization of 10 ml of phosphoric acid solution by NaOH 0.I N in the presence of phenol phthalein until the appearance of purple color (pH, = 9) 11 ml. of NaOH is consumed. (a) What is the concentration of phosphoric acid? (b) Calculate the indicator error. pk2.1 pK. - 7.2 pK - 1245. a) The Kw value that we normally use is for room temperature (25°C). Calculate the equilibrium H+ concentration and pH of pure, neutral water at 0.0°C (Kw= 1.14 x 10-15at 0.0°C) b) Methylamine (CH3NH2) is a derivative of the weak base ammonia. Write the equation for the ionization of methylamine in water, and use the I.C.E. method to find the pH of a 3.75 M CH3NH2 solution.(Kb= 4.37 x 10-4at 25°C)please answer on 1-a,b,c,d. Clear handwriting or type in, thank you! 1. The mixture of anions is an effective blood buffer with the following acid-base equilibrium: HO" (aq) + HPO* (aq) H:POs (aq) + H;O (1) a. For the equilibrium above, what is the effect of decreasing the pH? (give shift) b. As a result of the shift, which ion H:PO, or HPO, would appear to increase? c. For the equilibrium above, what is the effect of increasing the pH? (give shift) d. As a result of the shifl, which ion H:PO, or HPO would appear to increase?
- If 2 ml of 25 N H2SO4 is transferred to 50 ml volumetric flask and complete to mark with ditilled water, the concentration of acid will be .. M* O 2.5 O 1.5 2 O 0.5 0 1 Non of theseprecipitate is an insoluble solid X G When Carbonates react with a- attempt=24101&cmid%3D79168&page=D12 glish (en) - الامتحان النها The hydroxides of Group IA and IIA elements, except for beryllium hydroxide, are weak bases Select one: t of O True O False estion us page Jump to. Course Syllabus o gluwge jla y Student (Log out)A prepared solution of NaOH was titrated against Solution 1 (containing 0.5000 g KHP) and Solution 2 (0.1000 g KHP). What will be the calculated concentration of NaOH using Solution 1 compared to Solution 2? (NAOHJ: > [N2OH]: [NAOHJ. < [NAOH]: [NAOHJ: = [N2OH]: Indeterminate.
- NaOH + CaBr2 --> Reaction Type: S D, SD, DD, or C?25.0 cm³ sodium hydroxide is neutralized by 15.0 cm³ sulphuric acid of concentration 0.10 mol dm-3. a. Write the equation for the reaction b. From the equation, determine how many moles of sulphuric acid will neutralize 1.0 mol of sodium hydroxide. c. Determine how many moles of sulphuric acid are used in the neutralization. d. Determine the concentration of sodium hydroxide.0-25 Nor 1lit of Hcl mixed Ceith OINO somlor Hel, then find Normalibs q folition is A) 0. 16 B) 0.24 C) 0. 32 )) 0.48
- (a) H* Catalyst Zn(Hg)/HCI (b) H Ph,P CO,Me (c) H 1. Mg d) 2. H30* Br NH2 Ph (e) H* Catalyst MCPBA (f)Yeni... O Ara Posta Gonderileri Gözden Geçir Görünüm Yardim 4- Write equations for the acid base reactions that would occur (if any) if ethanol were added to solutions of each of the following compounds In each reaction, label the stronger acid, the stronger base, and so forth.(Please consult the table given below) Ya) NaNH (c) (d) NaOH EGO 16 A 12 IA 17 & 5 8 KAfter the neutralization reaction of 42% 0.5 mL nitric acid and 0.28M 18 mL sodium hydroxide, a temperature increase of 15 ° C was observed and the temperature value was determined as 825 cal. According to these results; What is the number of moles of neutralized base? (d(HNO3) = 1,51 g/mL; M(HNO3)=63,01 g/mol)