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Author Question: The base-dissociation constant of ethylamine (C2H5NH2 ) is 6.4 10-4 at 25.0 C. The H+ in a 1.4 ... (Read 99 times)

anshika

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on: Aug 27, 2018
The base-dissociation constant of ethylamine (C2H5NH2 ) is 6.4  10-4 at 25.0 C. The H+ in a 1.4  10-2 M solution of ethylamine is ________ M.
 
  A) 3.7  4.9  10-12
  B) 2.7  10-3
  C) 3.3  10-12
  D) 3.0  10-3
  E) 11.43

Question 2

The thermal decomposition of potassium chlorate can be used to produce oxygen in the laboratory.
 
  2KClO3 (s)  2KCl (s) + 3O2 (g)
 
  What volume (L) of O2 gas at 25 C and 1.00 atm pressure is produced by the decomposition of 7.5 g of KClO3 (s)?
  A) 4.5
  B) 7.5
  C) 2.3
  D) 3.7
  E) 11

Question 3

When silver nitrate reacts with barium chloride, silver chloride and barium nitrate are formed. How many grams of silver chloride are formed when 10.0 g of silver nitrate reacts with 15.0 g of barium chloride?
 
  A) 8.44 g
  B) 9.40 g
  C) 11.9 g
  D) 18.8 g


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GCabra

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

A

Answer to Question 2

C

Answer to Question 3

A


anshika

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Reply 2 on: Aug 27, 2018
Gracias!

patma1981

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

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