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For a certain chemical reaction, DH is < 0 and DS is < 0. This means that 1) we conclude the reaction must be spontaneous regardless of temperature and becomes even more so at higher temperatures. 2) we conclude the reaction must be spontaneous regardless of temperature and becomes even more so at lower temperatures. 3) we conclude the reaction may or may not be spontaneous, but spontaneity is favored by low temperatures. 4) we conclude the reaction may or may not be spontaneous, but spontaneity is favored by high temperatures. 5) we cannot make any conclusion about spontaneity or even tendencies from the limited information presented.
Chlorine can be generated by heating together calcium hypochlorite and hydrochloric acid. Calcium chloride and water are also formed.
The sample is diluted with 73.505 g of water. A 12.973 g aliquot of this solution is then titrated with 0.1038 M HCl. It required 29.32 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste.
An environmental engineer analyzes a sample of air contaminated with sulfur dioxide. To a 500. mL sample of air at 700. torr and 38°C, she adds 20.00 mL of 0.01017 M aqueous iodine, which reacts as follows:
calculate the concentrations of all species in a 1.62 m na2so3 sodium sulfite solution. the ionization constants for
a 0.21l sample of hydrogen gas is collected over water. the reaction that allowed the gas to be liberated was between
What is the freezing point of an aqueous 2.65 m calcium chloride (CaCl2) solution? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.
Calculate E when 900.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm. R = 8.314 J/mol*K and R = 0.08206 atm*L/mol*K
At 25C the acid dissociation constant for formic acid is 6.9x10-4. Calculate DG for this reaction. R=8.31x10-3 kj/K) Can you please help me work this problem.
How will the following changes alter the concentration of CO2(g) in the following reaction exothermic reaction? C6H12O6(s) + 6O2(g) 6CO2(g) + 6H2O(g)
How many milliliters of 0.105 M HCl are needed to completely neutralize 60.0 mL of 0.108 M Ba(OH)2 solution?
which are hybrid orbital the carbon at the following molecules a, H3C-CH3 b, H3C-CH= CH2 c, CH3-C Tripl bond C-CH2OH d, CH3CH=O
A container of gas at 760 mmHg and 20 degrees C is heated to 40 degrees C. What is the new pressure in mmHg?
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