[Answered] What volume of 50 NaOH is needed to prepare 25 mL of 2.0 NaOH? ...

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Author Question: What volume of 50 NaOH is needed to prepare 25 mL of 2.0 NaOH? ... (Read 65 times)

plus1

Hero Member
Posts: 676

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

Sr. Member
Posts: 347

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

Member
Posts: 676

Reply 2 on: Aug 23, 2018

TYSM

lkanara2

Member
Posts: 329

Reply 3 on: Yesterday

YES! Correct, THANKS for helping me on my review

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