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For a particular reaction, ?H° is -13.9 kJ and ?S is -41.6 J/K. Assuming these values change very little with temperature, over what temperature range is the reaction spontaneous in the forward direction?
Compare the molar solubility of AgOH in pure water, with that in a solution buffered at pH 7.00. Note the difference between the two cases: when AgOH is dissolved in pure water, the pH does not remain at 7. The value of Ksp for AgOH is 1.5x10^-8 a..
The reaction of 2,2-dimethyl-1-propanol with HBr is very slow and gives 2-bromo-2-methyl-propane as the major product.
At equilibrium the vessel contains 0.40 mol of PCl3 (g) as well as Cl2(g) and undissociated PCL5(g). What is the equilibrium constant for the decomposition of PCl5 to PCl3 and Cl2 at this temperature.
When a 3.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 2.472 kJ·K-1, the temperature decreases by 0.280 K. Calculate the molar heat of solution of KCl in kJ/mol
When optically active B was treated with CrO3 in pyridine, an optically inactive sample of A was obtained. Heating A with hydrazine in base gave hydrocarbon C, which, when heated with alkaline KMnO4, gave carboxylic acid D. Identify compounds A, B..
Polly Esther determined the Ca2+ ion content of a 100 mL sample of calcium fortified orange juice. After adding 2.0 M HCl solution to the sample, she filtered the juice to remove the pulp and other particulate matter
Tums calcium carbonate reactswith stomach acid ( HCI) according to the reaction below. One tablet of tums contains 500.0 mg CaCO3. If one tablet of tums is addedto 20.0 mL 0.100M HCI, how many grams of CO2 gas are produced?
The amount of sulfuric acid produced can be determined by titration with sodium hydroxide of known concentration. An 666.0 gram sample of an air that is known to contain sulfur dioxide was reacted with excess hydrogen peroxide
Question- Besides birth control pills, and "rhythm" method, what is another method of contraception and discuss how the method works to prevent pregnancy, at the physiological method, and any positive and negative side-effects.
How much slower will a reaction with 2 O3 + 10 NO be than a reaction with 6 O3 and 6 NO
An unkown metal crytallizes in one of the three cubic lattices.The edge length of the unit cell is 408pm.Given that the atomic radius of the metal is 144pm and the density of the solid is 19.3g/cm-3, what is the atomic symbol of the metal? a=2R a=..
Question- An equilibrium mixture of CO, O2 and CO2 at a certain temperature contains 0.0010 M CO2 and 0.0015 M O2. At this temperature, K c, equals 1.4 × 102 for the reaction
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