When the phase diagram for a substance has a solid-liquid phase ...

[rachel9]

When the phase diagram for a substance has a solid-liquid phase boundary line that has a negative slope (leans to the left), the substance ________.
 
  A) can go from solid to liquid, within a small temperature range, via the application of pressure
  B) sublimes rather than melts under ordinary conditions
  C) cannot go from solid to liquid by application of pressure at any temperature
  D) cannot be liquefied above its triple point
  E) melts rather than sublimes under ordinary conditions

Question 2

What is the solubility (in M) of PbCl2 in a 0.15 M solution of HCl? The Ksp of PbCl2 is 1.6  10-5.
 
  A) 2.0  10-3
  B) 1.1  10-4
  C) 1.8  10-4
  D) 7.1  10-4
  E) 1.6  10-5

[katara]

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[rachel9]

Thanks

[katara]

Welcome