(a) Complete the following chemical reaction equations: (i) AgCl(s) + NH3(aq) →
(a) Complete the following chemical reaction equations:
(i) AgCl(s) + NH3(aq) →
(ii) P4(s) + NaOH(aq) + H2O(l) →
(b) Explain the following observations:
(i) H2S is less acidic than H2Te
(ii) Fluorine is a stronger oxidising agent than chlorine
(iii) Noble gases are the least reactive elements
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(a) (i) AgCl + 2NH3 → [Ag (NH3)2]+Cl–
(ii) P4+ 3NaOH + 3H2O → PH3 + 3NaH2PO2
(b) (i) This is because bond dissociation enthalpy of H–Te bond is less than H–S as the size of Te is larger than S.
(ii) Fluorine is a stronger oxidising agent than chlorine due to low dissociation enthalpy of F–F bond and high hydration enthalpy of F– ions.
(iii) Noble gases are the least reactive elements due to fully filled outermost shells and zero electron gain enthalpy.
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