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An o.1 molar solution of butyric acid (HBu) has a pH that varies with the temperature at 10 C- pH=2.9, at 50 C: pH=2.95
a. Compute the equilibrium constant Ka at each temp.
b. For the reaction represented by this Ka, is the reaction endothermic or exothermic? Justify your answer using Le Chatelier's Principle.
a student sets up two reactions. reaction 1 uses 0.190 moll of reactant and reaction 2 uses 0.470 moll of reactant. how
A solution is prepared from 25.0g of benzene, c6h6 and 25.0g of an unknown compound. The freezing point of this solution is 4.3C. The normal freezing point of benzene is -5.12C/m. Determine the molar mass of the compound.
a 425 ml volume of hydrogen chloride gas, hcl is collected at 25 degree Celsius and 270 torr. what volume will it occupy at stp?
m is a metal x is a non-metal. upon strong heating of 0.5000g of mxo3s it decomposes forming mos and xo2g. then all of
A coffee-cup calorimeter contains 150.0g of water at 25.1C. A 121g block of copper metal is heated to 100.4C by putting it in a beaker of boiling water.
Draw and label the flowchart and show the degree of freedom analysis for the overall process, the split point, the treatment unit, and the mix point.
a man has sickle cell anemia, and an examination of his blood shows that a point mutation has caused the
Camphor is mixed with methanol, then sodium borohydride is added. Then boil, add mixture to ice and stir.
Excess sodium sulfate is added to exactly 50 mL of a solution containing an unknown amount of silver(I) cation. Determine the concentration of the silver ion in this solution if 3.54 mg of a solid is isolated.
A student prepared a stock solution of the assigned compound by weighing 2.345 grams of Cu(NO3)2. 6H20 and diluting it with water to a final volume of 25.00mL.
Natural lithium is 92.58% lithium-7, with atomic weight 7.016, and 7.42% lithium-6, with atomic weight 6.015. What is the observed atomic weight of lithium as it occurs in nature?
She weighed an empty 4.3 L bulb, then filled it with the gas at 1.60atm and 23.0 C and weighed it again. The difference in mass was 7.9g . Identify the gas.
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