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Author Question: 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 ... (Read 117 times)

clmills979

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on: Aug 27, 2018
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


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epscape

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Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

A

Answer to Question 3

2


clmills979

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  • Posts: 551
Reply 2 on: Aug 27, 2018
:D TYSM

cassie_ragen

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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