What factors can make a compound called as a salt? Specifywhich of the following compounds are salts: CH4 ,NaF, NaOH, CaO, BaSO4 , HNO3 , NH3 , KBr?
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Q: If a solution has a concentration of 10^-7 OH ions, how many H ions does it have?
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What factors can make a compound called as a salt? Specifywhich of the following compounds are salts: CH4 ,NaF, NaOH, CaO, BaSO4 , HNO3 , NH3 , KBr?
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- Which of the following aqueous solutions has the lowest pH: 0.1 M HCl; 0.1 M acetic acid (pKa = 4.86); 0.1 M formic acid (pKa = 3.75)?(i) MnO is basic whereas Mn207 is acidic in nature. Why? (ii) Transition metals form alloys. Why? (iii) Complete the following equation: 2MnO4 + 4KOH + O2 ———>If a solution has a concentration of 10^-7 OH ions, how many H ions does it have?
- A base is added to a 0.050 M solution of MnCl2, raising the pH gradually. Calculate the pH of the solution when 70 of the manganese has precipitated? Table 5-7 Solubility-Product Constants, K, at 25°C Fluorides Chromates (cont.) Ag, Cro, PbCro, Hydroxides (cont.) Ni(OH), Zn(OH), Cu(OH), Hg(OH)2 Sn(OH), Cr(OH), Al(OH), Fe(OH), Co(OH), Sulfides Baf, MGF2 PbF, SrF, CaF, 2.4 x 10-6 1.9 x 10-12 1.6 x 10-16 8 x 10-8 X 10-8 7.9 x 10-10 3.9 x 10-11 2 x 10-16 4.5 X 10-17 4 1.6 x 10-19 X 10-26 X 10-27 6.7 x 10-31 Carbonates NiCO, CaCO, BaCO, SrCO, CuCO, ZnCO, MNCO, FeCo, Ag,CO, CdCo, PbCO, M9CO, Hg,CO, 1.4 X 10-7 4.7 x 10-9 3. Chlorides 1.6 x 10-9 PbCl, AgCI Hg,Cl, х 10-33 X 10-38 2.5 x 10-43 1.6 x 10-5 X 10-10 2.5 x 10-10 2 x 10-1o 8.8 x 10-11 2.1 X 10-11 7 1.7 x 10-10 1.1 X 10-18 6. Bromides PbBr2 X 10-16 X 10-19 X 10-21 5 x 10-22 2.5 x 10-22 X 10-26 1.0 x 10-28 MnS 4.6 x 10-6 5.0 x 10-13 Fes 4. AgBr Hg,Br, 8.2 x 10-12 NiS Cos Zns 1.3 x 10-22 3 5.2 x 10-12 1.5 x 10-15 1 x 10-15 9.0 x 10-15…Carbon dioxide is dissolved in blood (pH 7.4) to form a mixture of carbonicacid and bicarbonate. Neglecting free CO2, what fraction will be present as carbonic acid? Would you expect a significant amount of carbonate (CO32-)?If 0.752 moles of (NH3OH)Cl is dissolved in 1 L of water what is the pH of the solution?
- In the following reaction in aqueous solution, the acid reactant is and its conjugate base product is CH;COOH + NH3 CH;CO0 + NH,"Solid iron(II) fluoride (FeF2, Ksp= 2.36 x 10-6) is dissolved in water. If 8.1 x 10-3 mol L-1 of iron(II) ion is found to be in solution. Is the solution saturated, unsaturated, desaturated or supersaturated.People often take milk of magnesia to reduce the discomfort as- sociated with acid stomach or heartburn. The recommended dose is 1 teaspoon, which contains 4.00 x 102 mg of Mg(OH)2. What volume of an HCI solution with a pH of 1.3 can be neutralized by one dose of milk of magnesia? If the stomach contains 2.00 x 102 ml. of pH 1.3 solution, is all the acid neutralized? If not, what fraction is neutralized?
- A base is added to a 0.050 M solution of MnCl2, raising the pH gradually. Calculate the pH of the solution when 88 of the manganese has precipitated? Table 5-7 Solubility-Product Constants, K, at 25°C Fluorides Chromates (cont.) Ag, Cro, PbCro, Hydroxides (cont) Ni(OH), Zn(OH), Cu(OH), Hg(OH), Sn(OH), Cr(OH), A(OH), BaF, MgF, PbF, SrF, CaF, 2.4 x 10-5 X 10-8 x 10-8 1.9 x 10-12 1.6 x 10-16 4.5 X 10-17 1.6 x 10-19 3 2 x 10-16 4 Carbonates 7.9 x 10-10 3.9 x 10-11 X 10-26 NiCO, CaCO, BaCo, SrCO, CuCO, ZnCO, MnCO, 1.4 x 10-7 3 10-27 4.7 x 10- 6.7 x 5 x 6 x 10-38 2.5 x 10-43 Chlorides 10-31 1.6 x 10- 1.7 x 10-10 1.1 x 10-18 1.6 x 10-9 7 x 10-10 2.5 x 10-10 10-33 PBCI, AgCi Hg,Cl, Fe(OH), Co(OH), Sulfides 2 x 10-10 8.8 x 10-11 2.1 x 10-11 Bromides X 10-16 X 10-19 3 x 10-21 X 10-22 2.5 x 10-22 X 10-26 1.0 x 10-28 MnS 7. PbBr, AgBr Hg, Br, 4.6 x 10-6 5.0 x 10-13 Feco Ag,CO, CdCo, PBCO, MgCO, Hg,CO, Fes 4 8.2 x 10-12 5.2 x 10-12 1.5 x 10-15 1 x 10-15 NiS 1.3 x 10-22 Cos ZnS lodides Pbl, Agl…Carbon dioxide is dissolved in blood (pH 7.4) to form a mixture of carbonic acid and bicarbonate. Neglecting free CO2, what fraction will be present as carbonic acid? Would you expect a significant amount of carbonate (CO32-)?For each of the following chemicals, name the general class they belong to, discuss their solubility in water and explain why they are/are not soluble in water (note the numbers are all subscripts): a) CH3(CH2)26COOH b) KCl c) CH3OH