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According to solubility rules, which statement best describes the solubility of Na3PO4 in 200 g of water at 40 °C?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
Scelta multipla
According to general solubility rules, which statement best describes the solubility of Na3PO4 in water at 40°C?
A
Na3PO4 is moderately soluble in water at 40°C.
B
Na3PO4 is only slightly soluble in water at 40°C.
C
Na3PO4 is highly soluble in water at 40°C.
D
Na3PO4 is insoluble in water at 40°C.
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Recall the general solubility rules for ionic compounds in water, which state that most sodium (Na⁺) salts are soluble regardless of the anion.
Identify the compound Na₃PO₄ as sodium phosphate, which contains sodium ions (Na⁺) and phosphate ions (PO₄³⁻).
According to the solubility rules, all sodium salts are highly soluble in water at typical temperatures, including 40°C.
Understand that phosphate salts of other cations may be less soluble, but sodium phosphate remains highly soluble due to the presence of sodium ions.
Conclude that Na₃PO₄ is highly soluble in water at 40°C based on these general solubility principles.
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