Chemistry Forums for Students > High School Chemistry Forum

Calculate the percentage....

(1/3) > >>

ronnie:
Would you please answer the following Q ?

0.949 g of mixture NaOH & NaCO3 dissolve in 100 cm3 Water. Then 30cm3, 0.65M HCL added into it for complete neutralization.
Calculate the percentage of NaOH, NaCO3 respectively ?

Please show the steps ~

thanks ~

Borek:
You have to set up a system of two equations - one will be mass + mass, second will be number of moles + number of moles. You have two unknowns - be it masses of both substances - that can be inserted into these two equations (hint: you will need their molar masses).

You also better read forum rules:

http://www.chemicalforums.com/index.php?topic=59.0

Qazzian:
Should that be NaHCO3, or Na2CO3?

Borek:

--- Quote from: Qazzian on April 22, 2006, 09:38:07 AM ---Should that be NaHCO3, or Na2CO3?

--- End quote ---

Does it matter?

Qazzian:
Wouldn't it matter for the number of moles HCl to neutrilize it?

Navigation

[0] Message Index

[#] Next page