20090 marks19 questions
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Source: IIT-JEE 2009, Paper 2, Chemistry, published by JEE (Advanced). The official PDF
For a first order reaction A→P, the temperature (T) dependent rate constant (k) was found to follow the equation log k = −(2000)(1/T) + 6.0. The pre-exponential factor A and the activation energy Eₐ, respectively, are
The spin only magnetic moment value (in Bohr magneton units) of Cr(CO)₆ is
For the reduction of NO₃⁻ ion in an aqueous solution, E⁰ is +0.96 V. Values of E⁰ for some metal ions are given below V²⁺ (aq) + 2e⁻ → V E⁰ = −1.19 V Fe³⁺ (aq) + 3e⁻ → Fe E⁰ = −0.04 V Au³⁺ (aq) + 3e⁻ → Au E⁰ = +1.40 V Hg²⁺ (aq) + 2e⁻ → Hg E⁰ = +0.86 V The pair(s) of metals that is(are) oxidized by NO₃⁻ in aqueous solution is(are)
Among the following, the state function(s) is(are)
In the reaction 2X + B₂H₆ → [BH₂(X)₂]⁺ [BH₄]⁻ the amine(s) X is(are)
The nitrogen oxide(s) that contain(s) N-N bond(s) is(are)
Match each of the reactions given in Column I with the corresponding product(s) given in Column II. Column I:
In a constant volume calorimeter, 3.5 g of a gas with molecular weight 28 was burnt in excess oxygen at 298.0 K. The temperature of the calorimeter was found to increase from 298.0 K to 298.45 K due to the combustion process. Given that the heat capacity of the calorimeter is 2.5 kJ K⁻¹, the numerical value for the enthalpy of combustion of the gas in kJ mol⁻¹ is