E) A and C are correct 25. Three colorless solutions in test tubes with no label

Question

E) A and C are correct 25. Three colorless solutions in test tubes with no labels placed in racks on the laboratory bench containing ammonium chloride (NH,C), hydrochloric acid (HCD), and sodium bydroxide (NeOH) labeled in random order (), (II), (II1) according to the following data : Reaction # Reactants (I) + (III) (l)+ (ill) (II) + (1) Observations : Gas evolved Heat evolved No reaction 2 The solutions are: A) (I) NaOH, (II) NFICI, (III) HCI B) (1) NaOH, (I1) HCL, (II) NH,CI C) () HCL. (l) NH,CL, (III) NaOH D) () NH CI,(II) HCL, (IIl) NaOH .

Explanation / Answer

The reactions are:

NH4Cl + NaOH = NH3 + NaCl + H2O (observation: Gas (ammonia) evolved)

NH4Cl + HCl = No reaction

HCl + NaOH = NaCl + H2O (observation: Heat evolved due to neutralization reaction)

Thus, Ans is (D) NH4Cl (I), HCl (II), NaOH (III)

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