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Visualize a substance with the following points on the phase diagram: a triple point at 0.5 atm and 150 K; a normal melting point at 175 K; a normal boiling point at 350 K; and a critical point at 2.0 atm and 450 K. The solid liquid line is “normal” (meaning positive sloping). For this, complete the following:
a) Roughly sketch the phase diagram, using units of atmosphere and Kelvin. Label the area 1, 2, and 3, and points T and C on the diagram.
b) Describe what one would see at pressures and temperatures above 2.0 atm and 450 K.
c) Describe the phase changes from 50 K to 250 K at 1.5 atm.
d) What exists in a system that is at 1 atm and 350 K?
e) What exists in a system that is at 1 atm and 175 K?
In the commercial preparation of Hydrogen Chloride, what weight of HCl in grams may be obtained by heating 468 grams of NaCl with H2S04.
2NaCl + H2S04 NaSO4 + 2HCl
To make a solution, 40 g of a nonelectrolyte is dissolved into 300 g of water. The freezing point depression of the solution is measured to be -7°C. Calculate the molar mass of the solute.
Calculate the boiling point elevation of an aqueous solution containing 36 grams of sucrose (C12H22O11) (MW=342g/mol) in 250 grams of water. The boiling point elevation constant for water is 0.512 degree Celsius per mole.
Write the equilibrium constant expressions (Kc and Kp) for the following reactions:1. SO2Cl2(g) ⇌ SO2(g) + Cl2(g)
2. H2O(l) + CO2(g) ⇌ H2CO3(aq)
arrange the following compounds (H2O, H2S,Br2,NaCl) in creasing
How many grams of Cu would have to react to produce 89.5 grams of Ag
How many moles of O2 are needed to react with 2.83 moles
1) What is the molarity of 1.28 mol of CA(NO3)2 dissolved in 1.50 L of solution?
2) How many moles are contained in 0.210M KOH?
How many joules are released when 2.4 g H2O at 0.0oC solidify? (Specific Heat = 4.2 J/goC, Enthalpy of fusion = 6010 J/mol, Enthalpy of vaporization = 40700 J/mol)
how did you got 25?
