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Problem: You may want to reference (Pages 138 - 144) Section 4.4 while completing this problem.Which of the following are redox reactions? (a) P4(s) + 10HClO(aq) + 6H2O(l) →  4H3PO4(aq) + 10HCl(aq)(b) Br2(l) + 2K(s) → 2KBr(s)(c) CH3CH2OH(l) + 3O2(g) → 3H2O(l) + 2CO2(g)(d) ZnCl2(aq) + 2NaOH(aq) → Zn(OH)2(s) + 2NaCl(aq)

FREE Expert Solution

We are asked which of the following are redox reactions.


(a) P4(s) + 10 HClO(aq) + 6 H2O(l) →  4 H3PO4(aq) + 10 HCl(aq)

  • P4 → elemental → OS = 0
  • P in PO43-→ OS = +5
  • Charge changed

The reaction is a redox reaction. 


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Problem Details

You may want to reference (Pages 138 - 144) Section 4.4 while completing this problem.

Which of the following are redox reactions? 

(a) P4(s) + 10HClO(aq) + 6H2O(l) →  4H3PO4(aq) + 10HCl(aq)

(b) Br2(l) + 2K(s) → 2KBr(s)

(c) CH3CH2OH(l) + 3O2(g) → 3H2O(l) + 2CO2(g)

(d) ZnCl2(aq) + 2NaOH(aq) → Zn(OH)2(s) + 2NaCl(aq)

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