In redox reactions are transferred from one substance to another. This transfer

Question

In redox reactions are transferred from one substance to another. This transfer results in changes in Complete and balance the following unbalanced chemical equation: Zn(s) + HCI(aq) rightarrow + What 2 types of reactions identify it? Decomposition Double displacement Single displacement Redox Identify the species being oxidized and reduced in the following reaction: CO(g) + H_2O(g) rightarrow CO_2(g) + H_2(g) Determine the oxidation numbers of the elements in the compounds. S_2O_3 Cr(OH)_3 P_2O_5

Explanation / Answer

2.

In redox reactions ELECTRONS are trnasferred from one substance to another. This transfer results in changes in OXIDATION NUMBERS

3)

Zn(s) + 2HCl(aq) = ZnCl2(s) + H2(g)

single displacement, since only H and Zn are replaced

4)

CO goes from C+2 to form CO2 which is C +4, then it lsoes 2 electrons (oxidation)

H2O goes from H+1 to form H2; which is H 0 (reduction)

5)

S2O3 (diagonal numbers)

S = +3

O = -2

Cr(OH)3

Cr = +3

OH = -1

O = -2 and H = +1

P2O5

P = +5

O = -2

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