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You mix 20g of potassium nitrate with 100mL of water at 20oC. Describe the solution in terms of saturation.
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A drug used to treat hypertension undergoes a decomposition reaction to give an insoluble product. Calculate the temperature at which this reaction starts to become spontaneous if the enthalpy of reaction is 51 kJ/mol and the entropy of the reaction at this temperature is 118.74 J/mol-K
Calculate the volume occupied by 22.12 g of sodium phosphate at 6.54 atm and 76 degrees Celsius.
write the rate equation
33. Consider the following reaction : CO(g)+2H 2 (g) CH 3 OH(liq.) Given : Delta f G^ (CO)=-137 kJ.mol^ -1 , Delta f G^ (CH 3 OH)=-166 kJ.mol^ -1 Calculate Delta_{r}*G at 25 degrees * C for the following pressures : P(CO) = 5 atm and P(H_{2}) = 3atm .
Carbonic acid ionizes in water to produce hydronium and bicarbonate ions. It can also decompose into carbon dioxide and water. With this information, explain why drinking carbonated drinks, like soft drink, results in burping.
Acetone, C3H6, is the main ingredient of nail polish remover. A solution is made up
by adding 35.OmL of acetone (d=0.790g/mL) to 50.0mL of ethyl alcohol, C2H60
(d=0.789g/mL). Assuming volumes are additive, calculate (a) the mass percent of
acetone in the solution. (b) the volume percent of ethyl alcohol in the solution. (c) the
mole fraction of acetone in the solution.
In a titration, you found that 50.0ml HCl solution requires 25.00ml of 1.00M NaOH. What is the concentration of the hydrochloric acid solution?
2. A solution us prepared by mixing 1g of ethanol ( C2H6O) with 100g water to give a final volume of 101 ml. Calculate the mole fraction for the solute and solvent,and the molarity of ethanol in the solution.
