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You would like to determine the reaction enthalpy for Zn(s) + 2HCl(aq) ? ZnCl2(aq) + H2(g) In part 1 of your experiment you mix 50.0 ml of 2.00 M HCl with 50.0 ml of 2.00 M NaOH. Temperature of the solution rises from 16.9 to 30.4 oC. You determine the density of the resulting solution to be 1.04 g/ml. In part 2 of your experiment you use 100.0 ml of 1.0 M HCL and 1.3078 g of Zn(s). Density of 1.0 M HCl is 1.015 g/ml and heat capacity of the ZnCl2 solution is 3.95 J g-1 K-1. In addition, you look up the heat capacity of water (4.18 J g-1 K-1) and 1.0 M NaCl (3.93 J g-1 K-1); the enthalpy of neutralization for NaOH and HCl is -57.32 kJ mol-1. a) determine calorimeter constant b) determine reaction enthalpy for the Zn / HCl reaction c) if ?fHo (ZnCl2 aq) is -482.2 kJ mol-1 and ?fHo (HCl aq) is -165.2 kJ mol-1, what is you percent error?
A student titrated a .4630g sample of unknown monoprotic acid with 0.1060m NaOH. Using a derivative curve, the student found, the equivalence point volume to be 28.70mL of NaOH
The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) consist of sublimation of the metal Na atom
a volume of 200mlk of nitrogen is collected over water at a temperture of 24 degrees celcius and the atmospheric
How long does it take to deposit a coating of gold 1.00um thick on a disk-shaped medallion 4.00 cm in diameter and 2.00 mm thick at constant current
a piece of sodium metal reacts completely with water as follows.2 nas 2 h2ol 2 naohaq h2gthe hydrogen gas generated
an automobile gasoine tanks holds 42 kg of gasoline. when the gasoline burns 147 kg of oxygen are consumed and carbon
Calculate k, Calculate also how long it would take for half of A to react. assume pseudo first order with k'=k[OH-], since [OH-] is in great excess.
The emulsifying agent from hand cream, a salt, is prepared from two chemicals. Write the structure of stearic acid.
if 24g mg is used and the percentage yield is 95 how many grams of magnesium hydroxide should be
the mineral fluorite is composed of CaF2. the molar solubility of calcium fluoride in water is 2.1x10^-4 moles/L. what is the ksp of CaF2
When you heat baking soda (NaHCO3), it breaks down into sodium carbonate powder (Na2CO3), carbon dioxide and water vapor. Write a correct thermo chemical equation and explain what it tells you about the reaction ( The enthalpy of this reaction is ..
Propose a synthetic method to carry out the transformation shown, using any additional organic or inorganic reagents.
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