What cation will be in solution when each of the following compounds are dissolv

Question

What cation will be in solution when each of the following compounds are dissolved in water? a) Ca(NO_3)_2 b) CuSO_4 c) FeSO_4 d) Fe(NO_3)_3 e) Mg(NO_3)_2 f) SnCl_4 g) Zn(NO_3)_2 h) HCl First, predict which of the following reactions will take place. For the reactions that will take place, complete and balance the reaction equations. Then indicate which molecule was oxidized and which was reduced. a) Ca_(s) + Fe^2+_(aq) rightarrow b) Zn_(s) + Ca^2+ rightarrow c) HCl + Fe_(s) rightarrow d) Mg_(s) + Zn^2+_(aq) rightarrow e) Cu_(s) + HCl rightarrow Use the following information to arrange the metals A, B, and C in order of decreasing reactivity starting with the most reactive (1) and ending with the least reactive (3). B_(s) + A^2_(aq) rightarrow B^2+_(aq) + A_(s) A_(s) + C^2+_(aq) rightarrow A^2+_(aq) + C_(s) B_(s) + C^2+_(aq) rightarrow B^2+_(aq) + C_(s)

Explanation / Answer

1)

a)

Ca(NO3)2 is formed by Ca2+ and NO3-

So,

cation is Ca2+

b)

CuSO4 is formed by Cu2+ and SO42-

so,

cation is Cu2+

similarly cations for rest are:

c)

Fe2+

d)

Fe3+

e)

Mg2+

f)

Sn4+

g)

Zn2+

h)

H+

I am allowed to answer only 1 question at a time

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