Among the options, the correct statement is; "It is a single replacement reaction because copper replaces silver within a compound as copper is higher than silver in the activity series."
The reaction between copper and aqueous silver nitrate is written as;
Cu(aq) + 2AgNO3(aq) ------> Cu(NO3)2(aq) + 2Ag(s).
In this reaction, the copper atom replaced the silver atom in the compound silver nitrate. This is a single replacement reaction because only one atom was replaced from left to right.
Hence, the correct statement is that; " It is a single replacement reaction because copper replaces silver within a compound as copper is higher than silver in the activity series."
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