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Phosphoric acid is a triprotic acid (Ka1 = 6.9× 10-3, Ka2 = 6.2× 10-8, and Ka3 = 4.8× 10-13). To find the pH of a buffer composed of H2PO4-(aq) and HPO42-(aq), which pKa value would you use in the Henderson-Hasselbalch equation? Calculate the pH of a buffer solution obtained by dissolving 20.0 g of KH2PO4(s) and 30.0 g of Na2HPO4(s) in water and then diluting to 1.00 L.
Which one of the following is the highest temperature?
Consider the reaction CuSO4(s) ! CuO(s) + SO3(g) . If G? = -14.6 kJ at 950?C for this reaction, calculate G for an SO3(g) pressure of 50 bar at this temperature.
Pretend that the HCl of this reaction is used in the neutralization of 45mL of a solution of Ga(OH) 3. What was the molarity of the Ga(OH)3 solution
What is green chemistry. how does it relate to heating A mixture of sodium carbonate and sodium bicarbonate (lab)
what is the volume of co2 that can be removed using a 2.6 kg sodium peroxide cartilage? evaluate at stp. temp 0 degrees C and 1atm pressure.
Various types of medicines use in daily life? and classify them into analgesics, antipyretics, antibiotics, sedatives, antiseptics.
Calculate the percent compostion of impure benzoic acid. The orignial weight of benzoic mixture was 4.23 g
Use enthalpy of formation data to calculate the number of moles of CO2(g) produced per megajoule of heat released from the combustion of each fuel under standard conditions
Predicting the Polarizability of a Molecule. Consider the following set of data for polarizability. From what I have learned, the simplest model for predicting the polarizability of a molecule is to assume that polarizability scales with the type.
Why is it possible to us ehtnol to extract an organic compound from water even though most organics are more soluble in ethanol than in water?
Which stage of ionization usually produces more ions and why?
Given the three isomeric alcohols, 2,2-dimethyl-1-butanol, 2-methyl-2-pentanol, and 2-methyl-3-pentanol, which are chiral
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