Ag+ , K+ , Pb2+, Zn2+ : Classify the Bronsted-Lowry acidity of these cations
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Ag+ , K+ , Pb2+, Zn2+ : Classify the Bronsted-Lowry acidity of these cations
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- Explain the difference in the melting points of the linoleic acid and linolenic acid:Define the following:- pH- Buffer- pKaBicarbonate/carbonic acid buffer in blood is an example of an equilibrium reaction that is meant to be very insensitive to change. How does the bicarbonate/carbonic acid buffer re-establish equilibrium if acidity increases? How does the bicarbonate/carbonic acid buffer re-establish equilibrium if alkalinity increases?
- Consider the following pH titration curve of a diprotic acid. What is the approximate values for pka 1 and pka 2? the curve is attached below.Which of the following combinations would be the best choice to buffer the pH of a solution at approximately 7? Ionization Constants for Aqueous Weak Acids at 25 °C Acid K. (pK,) Conjugate Base Hydrogen phthalate ion, Cg H4(CO2H)(CO2) Acetic acid, CH3 CO,H Acetate ion, CH; CO2- 1.8 x 10-5 (4.74) Weak Acid Phthalic acid, C6 H4 (CO,H)2 1.3 x 10-3 (2.89) Dihydrogen phosphate Hydrogen phosphate ion, H2 PO4 Hydrogen phosphate ion, HPO42 6.2 x 10-8 (7.21) ion, HPO,2- Phosphate ion, PO,* 3.6 x 10-13 (12.44) O Na, HPO4 and NagPO4 O NaH2 PO4 and NazHPO4 O H;PO4 and NaH2 PO4Indicate the ionic species of phosphoric acid that predominates at pH 4, 8, and 11.
- Calcium carbonate (CaCO₃(s)) is an important building material (limestone) and a quick cure for acid indigestion (TUMS). Ksp = 8.7x10⁻⁹ for CaCO₃(s). What, if any, is the effect of lowering the pH (as occurs in acid rain and acid indigestion) on the solubility of CaCO₃(s). (hint: use Le Chatelier's principle) A) there is no effect from lowering pH on CaCO₃(s) solubility B) lowering pH increases the CaCO₃(s) solubility C) additional information is required to determine the outcome D) lowering the pH lowers the solubilityNormal arterial pH is 7.35 to 7. 45. Both metabolic and respiratory alkalosis have pH more basic compare to the normal arterial pH. The difference is 0.5 units. What is pH value in alkalosis? Niemann-Pick type C disease is a progressive neurological disease; symptoms include unsteady walking with uncoordinated limb movements, slurred speech, a difficulty in swallowing, epilepsy and tremor. This condition is due to the abnormal functioning of a lysosome. State the normal functions performed by this organelle.Describe in detail the steps involved to prepare following solutions;a, 1 Molar anhydrous Ferrous Sulfateb, 1 Normal phosphoric acidc, 0.1 Molal Mohar’ Saltd, 0.2% (v/v) , (v/w), (w/v) and (w/w) solution of acetic acid.
- If Ca(NO3)2 solution is added to the saturated CaSO4 solution;Solubility product of CaSO4 (KÇ)II. Solubility of CaSO4III. The concentration of Ca + 2 ionWhich of these or which decreases at the same temperature? A) I only B) II only C) III only D) I and II E) II and IIIAt what pH does a lysine solution exhibit the highest buffering capacity? (Lysine pKas: pk1 = 2.2, pK2 = 8.95, pK3 = 10.5) %3D O рH 12.1 О рH 9.72 O pH 5.67 pH 8.95The pHpH scale for acidity is defined by pH=−log10[H+] where [H+]is the concentration of hydrogen ions measured in moles per liter (M). A solution has a pH of 10.2. Calculate the concentration of hydrogen ions in moles per liter (M).