Which of the following reactions is a redox reaction? Mg (s) + I_2 (aq) rightarr

Question

Which of the following reactions is a redox reaction? Mg (s) + I_2 (aq) rightarrow MgI_2 (s) H_2SO_4 (aq) + 2NaOH (aq) rightarrow Na_2SO_4 (aq) + 2H_2O (l) 2K_3PO_4 (aq) + 3CuCl_2 (aq) rightarrow 6KCl (aq) + Cu_3 (PO_4)_2 (s) None of them All of the above Which one of the following compounds is a strong electrolyte? HF(aq) KOH(aq) C_6 H_12O_6 (aq) 0.1 M Hydrochloric acid (HCl) Sugar 0.1 M Acetic acid (HC_2H_3O_2) A and F C and E B and D A and C E and F Which one of the following compounds is a weak electrolyte? HF (aq) KOH (aq) C6H1206 (aq) 0.1 M Hydrochloric acid (HCl) Sugar 0.1 M Acetic acid (HC_2H_3O_2) A and F C and E B and D A and C E and F

Explanation / Answer

23. a. Mg(s) + I2(aq) ----> MgI2(s)

    Mg gets oxidised to Mg^2+ , I2 gets reduced to 2I^-

Mg^2+(aq) + 2I-(aq) ---> MgI2(s)

remaining b is acid base reaction,c is ion exchange reaction.

answer: a

24.

KOH , HCl are strong electrolytres. because which gives 100% dissociation and gives ions.

answer: B and D

25. weakelectrolyte : which may not give 100% disssociation.so that it conducts partial electricity.

HF and aceticacid(CH3COOH)

answer: A and F

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