Identifying Basic Solutions Without OH: Examining Salts

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To determine if a salt forms a basic solution when dissolved in water without the presence of hydroxide ions (OH), one must consider the hydrolysis of its constituent ions. Salts that yield anions capable of accepting protons, such as carbonate ions from K2CO3, typically create basic solutions. In contrast, salts like NaCl, (NH4)2SO4, CuSO4, and NH4NO3 do not produce basic solutions due to their ions not exhibiting significant basic properties. The Brønsted-Lowry theory emphasizes the role of proton donors and acceptors in this context. Therefore, K2CO3 is the primary salt among the options that leads to a basic solution upon dissolution.
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How do you know when something forms a basic solution when dissolved in water if it doesn't have an OH?
This is the question I'm looking at:

Which of the following salts forms a basic solution when dissolved in water?

(A) NaCl
(B) (NH4)2SO4
(C) CuSO4
(D) K2CO3
(E) NH4NO3


Thanks ahead of time.
 
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