Which of the following ions is present in washing soda?
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A.
Nitrate ion
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B.
Carbonate ion
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C.
Sulphate ion
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D.
Chloride ion
Correct Answer:
B. Carbonate ion
Explanation:
Washing soda, chemically known as sodium carbonate (Na2CO3), is an inorganic compound that dissociates in water to release sodium ions (Na+) and carbonate ions (CO3^2-). Among the options provided, the carbonate ion is the specific polyatomic ion found in its chemical structure. Therefore, the presence of the carbonate ion confirms its identity as washing soda.
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