Day 53: MHT-CET Chemistry

1. A.
   Pentacarbonyliron (0)
2. B.
   Hexacyanoferrate (II) ion
3. C.
   Trioxalatocobaltate (III) ion
4. D.
   Sodium hexanitrocobaltate (III)

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1. A.
   HCl
2. B.
   $\mathrm{CO_2}$
3. C.
   $\mathrm{NH_3}$
4. D.
   $\mathrm{O_2}$

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1. A.
   $+5$
2. B.
   $+4$
3. C.
   $+3$
4. D.
   $+2$

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1. A.
   $\mathrm{Cu_{(s)} \longrightarrow Cu^{+2}_{(aq)} + 2e^-}$
2. B.
   $\mathrm{Cu^{+2}_{(aq)} + 2e^- \longrightarrow Cu_{(s)}}$
3. C.
   $\mathrm{H_2(g) \longrightarrow 2H^+_{(aq)} + 2e^-}$
4. D.
   $\mathrm{H^+_{(aq)} + 2e^- \longrightarrow H_2(g)}$

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1. A.
   $\mathrm{NO(g) + O_3(g) \longrightarrow NO_2(g) + O_2(g)}$
2. B.
   $\mathrm{2KI(aq) + H_2O(l) + O_3(g) \longrightarrow 2KOH(aq) + I_2(g) + O_2(g)}$
3. C.
   $\mathrm{H_2O_2(l) + O_3(g) \longrightarrow H_2O(l) + 2O_2(g)}$
4. D.
   $\mathrm{PbS(s) + 4O_3(g) \longrightarrow PbSO_4(s) + 4O_2(g)}$

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