Chemistry

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1) When we say calcium reacts readily with cold water, it means the reaction is moderately fast?

2) When we react Fe with dilute HCl, we get FeCl2 & H2. Why won't we get FeCl3?

3) Similarly, when we react Fe with CuSO4, displacement reaction occur to give FeSO4 & Cu. Why won't we get
Fe2(SO4)3?

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