The decomposition of A into product has value of K as 4.5 x 103 sec-1 at 10º C and energy of activation 60 kJ/mol. At what temperature would K be 1.5 x 104 sec-1 .
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At 473 K, equilibrium constant Kc for decomposition of phosphorus pentachloride, PCl5 is 8.3 ×10–3 . If decomposition is depicted as,
(a) Kc=[PCl3] [Cl2] / [PCl5] (b) 120.48 (c) (i) equilibrium will shift on RHS. (ii) equilibrium will shift on LHS. (iii) equilibrium will shift on RHS.
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What is the SI prefix for each of the following multiples and submultiples of a unit? (a) 103 (b) 10–1 (c) 10–2 (d) 10–6 (e) 10–9 (f) 10–12
(a) kilo (b) deci (c) centi (d) micro (e) nano (f) pico
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Decomposition reaction of ammonia on 1t surface has rate constant = 2.5 x10-1 mol L-1 sec-1
Unit of k explain that it is zero order reaction.
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he activation energy of a reaction is 94.14 KJ/mol and the value of rate constant at 40º C is 1.8 x10-1 sec-1 . Calculate the frequency factor A.
Given, Ea = 94.14 x103 J mol-1 , T = 40 + 273 = 313 K, K = 1.8 x 10-1 sec-1 By using, A = antilog (10.9635) = 9.194 x1010 sec-l
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The activation energy of a reaction is 94.14 KJ/mol and the value of rate constant at 40º C is 1.8 x 10-1 sec-1.
Given, Ea = 94.14 x 103 J mol-1, T = 40 + 273 =313 K, K = 1.8 x 10-1 sec-1 By using, A = antilog (10.9635) = 9.194 x 1010 sec-1
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The decomposition of A into product has value of K as 4.5 x 103 sec-1 at 10º C
The correct answer is " 24º C "
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The energies of activation for forward and reverse reactions for A2 + B2 ⇋ 2AB are 180kJ mol^–1 and 200kJ mol^–1 respectively.
(a) : ΔHR = Ef - Eb = 180 - 200 = - 20 kJ mol–1. The correct answer for this question should be –20kJ mol– 1. But no option given is...
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The bond dissociation energy of B – F in BF3 is 646kJ mol^–1 whereas that of C – F in CF4 is 515kJ mol^–1.
(c) : In BF3, B is sp2 hybridised and has a vacant 2p-orbital which overlaps laterally with a filled 2p-orbital of F forming strong pp-pp bond. However in CF4, C...
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Define ‘activation energy’ of a reaction,
The energy required to form the intermediate called activated complex is known as activation energy. Activation energy = Threshold energy – Average energy of the reactants
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The following table gives the total product schedule of labour. Find the corresponding average product and marginal product schedules of labour.
L TPL AP = TP/L MP = TPn -TPn - 1 0 0 0 - 1 15 15 15 2 35 17.5 20 3 50 16.67 15 4 40 10 -10 5 48 9.6 -8
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