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The density of a 0.438 solution of potassium chromate at 298 is 1.063 .Calculate the vapor pressure of water above the solution. The vapor pressure of pure water at this temperature is 0.0313 . Assume complete dissociation.
Calculate the amount of heat energy required to convert 55.0 g of water at 62.5 degrees Celsius to steam at 124.0 degrees Celsius
At 10 degrees, Kc = 56.3 for the reaction below. H2 + Cl2 --> HCl
it is found that the concentration of Pb2+ in a saturated solution of lead bromide is 1.2x10^-2M. what is the ksp for PbBr2
All ammonium compounds, that comprise the ammonium ion (NH4+) and negative ion, are thermally unstable. Explain two ways that ammonium compounds decompose when they are heated.
The rate of the reaction in terms of the "disappearance of reactant" includes the change in the concentration of the reactant, the time interval, and the coefficient of the reactant
A certain sunstance, intially present at 0.0800 M, decomposes by zero-order kinetic with a rate constant of 2.50 x 10-2 mol/l s. Calculate the time (in seconds) required for the system to reach a concentration of 0.0630
undergoes a thermal decomposition reaction to form gold metal and oxygen gas. Write a balanced molecular equation that describes this reaction.
Assume that you have a cylinder with a movable piston. What would happen to the gas pressure inside the cylinder if you do the following? (a) Decrease the volume to one third the original volume while holding the temperature constant.
What is the effect on the calculated concentration of the standard solution if the trials of the pure KHP samples are consistently over-titrated to a deeper magenta color?
Suppose 25.0 g of solid NaOH is added to 1.5 L of an aqueous solution that is already 2.4 M in NaOH. Then water is added until the final volume is 4.00 L. Determine the concentration of the NaOH in the resulting solution.
Iodide ion catalyzes the decomposition of hydrogen peroxide. the reaction is first-order in H2O2. what is the value of the rate constant,k, if the initial rate is 0.00842 mol/(L*s)?
Combine the above two equations with that for the formation of liquid water and use addition and/or subtraction(i.e. Hess's Law) to arrive at the equation for the formation of magnesium oxide.
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