Calcium Carbonate reacts with aqueous HCl to give CaCl_(2)andCO_(2) according to the reaction, CaCO_(3)(s)+2HCl(aq)toCaCl_(2)(aq)+CO_(2)(g)+H_(2)O(l) What mass of CaCO_(3) is required to react completely with 25 ml of 0.75 M HCl?
Calculate enthalpy of ionisation of OH^(-) ion. Given: H_(2)O_((l)) to H_((aq))^(+) + OH_((aq))^(-) , DeltaH^(@) = -285.83 KJ
If DeltaH_(f)^(0) " for" H_(2)O_(2(l)) and H_(2)O_((l)) " are " -188 kJ mol^(-1) and -286 kJ mol^(-1) , what will be the enthalpy change of the reaction 2H_(2)O_(2(l)) rarr 2H_(2)O_((l)) + O_(2(g)) = ?
Which of the following are non-metal displacement reactions ? (A) Ca(S) + 2H_(2)O(l) rarr Ca(OH)_(2)(aq) + H_(2)(g) (B) V_(2)O_(5)(S) + 5Ca(S) overset(Delta)rarr 2V(S) + 5CaO(S) (C ) 2Fe(S) + 3H_(2)O(l) overset(Delta)rarr Fe_(2)O_(3)(S) + 3H_(2)(g) (D) Cr_(2)O_(3)(S) + 2Al(S) overset(Delta)rarr Al_(2)O_(3)(S) + 2Cr(S)
Enthalpy of neutralization is defined as the enthalpy change when 1 mole of acid/base is completely neutralized by base/acid in dilute solution. For strong acid and strong base neutralization net chemical change is H_((aq))^(+) + OH_((aq))^(-) rarr H_(2)O_((l)), Delta H_(r )^(0) -= - 55.84 kJ//mol If enthalpy of neutralization of CH_(3)COOH by NaoH is -49.86 kJ/mol then enthalpy of ionisation of CH_(3)COOH is
Enthalpy of neutralization is defined as the enthalpy change when 1 mole of acid/base is completely neutralized by base/acid in dilute solution. For strong acid and strong base neutralization net chemical change is H_((aq))^(+) + OH_((aq))^(-) rarr H_(2)O_((l)), Delta H_(r )^(0) -= - 55.84 kJ//mol What is Delta H^(0) for complete neutralisation of strong diacidic base A(OH)_(2) " by " HNO_(3) ?
Suggest a scheme of classification of the following redox reactions (a) N_(2) (g) + O_(2) (g) rarr 2 NO (g) (b) 2 Pb (NO_(3))_(2) (s) rarr 2 PbO (s) + 4 NO_(2) (g) + O_(2) (g) (c) NaH(s) + H_(2) O (l) rarr NaOH (aq) + H_(2) (g) (d) 2NO_(2) (g) + 2OH^(-) (aq) rarr NO_(2)^(-) (aq) + NO_(3)^(-) (aq) + H_(2) O (l)
NARENDRA AWASTHI-THERMODYNAMICS-Level 3 - Match The Column
