Product is solid precipitate for which of the reaction (Assume aqueous reactants)? i. AgNO3+NaCl→NaNO3+AgCl ii. Pb(NO3)2+2KI→PbI2+2KNO3 iii. 2NaOH+H2SO4→Na2SO4+2H2O
A
i only
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B
ii only
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C
iii only
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D
i and ii only
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E
ii and iii only
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Solution
The correct option is C i and ii only Product is solid precipitate for i and ii only. i. A precipitate of silver chloride AgCl is formed. AgNO3+NaCl→NaNO3+AgCl ii. A precipitate of lead di-iodide PbI2 is formed. Pb(NO3)2+2KI→PbI2+2KNO3 iii. No precipitate is obtained. It is an example of acid base neutralization reaction. The salt is completely water soluble. 2NaOH+H2SO4→Na2SO4+2H2O