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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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arlinguillen arlinguillen
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2 years ago
"Washing soda" (sodium carbonate) may be used to "soften" water by the removal of certain ions that would otherwise react with common soaps. When the "hardness" is due to calcium ion, the "softening" process may be represented as:

Ca2+(aq) + CO32-(aq) → CaCO3(s)

What mass of sodium carbonate would be required to remove essentially all of the calcium ion from 750 L of solution containing 43 mg Ca2+ per liter?

▸ 85 g

▸ 67 g

▸ 12 g

▸ 48 g

▸ 22 g
Textbook 
General Chemistry: Principles and Modern Applications

General Chemistry: Principles and Modern Applications


Edition: 11th
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njn;lnjn;l
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