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Author Question: What volume of 50 NaOH is needed to prepare 25 mL of 2.0 NaOH? ... (Read 133 times)

plus1

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on: Aug 23, 2018

What volume of 50 NaOH is needed to prepare 25 mL of 2.0 NaOH?
 
 



Question 2

You need 45 mL of a 5 aqueous solution of NaHCO3.
  (a) What weight of NaHCO3 is required?
  (b) How much water will you add?
 
 



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ashely1112

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Reply #1 on: Aug 23, 2018
Answer to Question 1

(a) 25 mL x (2.0 g/100 mL) = 0.50 g
X mL x (50 g/100 mL) = 0.50 g, X = 1 mL



Answer to Question 2

(a) 45 mL (5 g/100 mL) = 2.25 g
(b) enough to make the final volume 45 mL



plus1

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Reply 2 on: Aug 23, 2018
Wow, this really help

ttt030911

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Reply 3 on: Yesterday
Gracias!

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