The H for the solution process when solid sodium hydroxide ...

[nelaaney]

The H for the solution process when solid sodium hydroxide dissolves in water is 44.4 kJ/mol. When a 12.6-g sample of NaOH dissolves in 250.0 g of water in a coffee-cup calorimeter, the temperature increases from 23.0 C to ________C.
 
  Assume that the solution has the same specific heat as liquid water, i.e., 4.18 J/g-K. A) 35.2
  B) 24.0
  C) 36.4
  D) 35.7
  E) 40.2

Question 2

The Ksp for Zn(OH)2 is 5.0  10-17. Determine the molar solubility of Zn(OH)2 in a buffer solution with a pH of 11.5.
 
  A) 5.0  106
  B) 1.2  10-12
  C) 1.6  10-14
  D) 5.0  10-12
  E) 5.0  10-17

[pallen55]

Answer to Question 1

D

Answer to Question 2

D

[nelaaney]

Gracias!

[kilada]

Excellent