OK, it's me again with another question about predicting products of a reaction. I found a worksheet on the internet (http://misterguch.brinkster.net/001_002.doc
) with loads of equation questions, and I started with Section 3, Q1:
Predict the products of the following reaction:
1) Ag + CuSO4 -->
OK, so the easy answer is to think that there must be a reaction otherwise they wouldn't be asking for the product, so the answer is AgSO4 + Cu, and then balance it:
2Ag + CuSO4 --> Ag2SO4 + Cu
BUT what I don't understand is why there's a reaction at all - Siver is less reactive (lower on the reactivity series) than copper so why does it react with SO4 and displace the copper? I thought something only displace another element if the displacing element was more reactive than the other one.
Am I missing something very basic?