The pH of a 0.60 M aqueous solution of formic acid, HCHO2, at ...

[clmills979]

The pH of a 0.60 M aqueous solution of formic acid, HCHO2, at 25.0 C is 1.98. What is the value of Ka for formic acid?
 
  A) 2.0  10-5
  B) 1.8  10-4
  C) 6.0  10-5
  D) 3.5  10-4
  E) none of the above

Question 2

The oxidation number of B in B2O3 is ________.
 
  A) +3
  B) +2
  C) +1
  D) +4
  E) +5

Question 3

Chromium crystallizes in a body-centered cubic unit cell. There are ________ chromium atoms per unit cell.
 
  Fill in the blank(s) with correct word

[epscape]

Answer to Question 1

B

Answer to Question 2

A

Answer to Question 3

2

[clmills979]

Gracias!

[tkempin]

Great answer, keep it coming