Last seen: Jan 13, 2022
From ΔH = ΔU + ΔngRT ΔH = -20 x 1000 - 1 x 8.314 J/mol.K x 298 K = 22477.572 J ΔG = ΔH - TΔS = -13537.572 J = -13538 J
Ru2+ = 4d6 = t2g2,2,2eg0,0 since Δ0 > P No. of unpaired electrons = zero Magnetic Moment = 0
Answer is: 9 16q.png
milliequivalent of K2Cr2O7 = milliequivalent of FeC2O4 Vml x 0.02 x 6 = 0.288/144 x 3 x 1000 Vml x 0.02 x 6 = 2 x 6 Vml = 100 ml
(3) non–planar and almost colorless Explanation: Structure of H2O2 is of open book shape. It is a colour less viscous liquid but in large quantity...
(2) NCl3 and HCl Explanation: NH3(limiting) + 3Cl2(excess) → NCl3 + 3HCl 8NH3(excess) + 3Cl2 (limiting) → 6NH4Cl + N2
(1) a/√2 Explanation: In FCC octahedral voids are present at the edge centers and body center. 2s.png Minimum distance between centers of t...
(4) Clark's method Explanation: Clark's Method is used to remove temporary hardness by using lime water (or) Ca(OH)2.
(3) zone refining Explanation: Germanium, Silicon, Boron, Gallium and Indium can be obtained in pure state by zone refining process.
(2) Al3+ < Mg2+ < Na+ < F– < O2– < N3– Explanation: Al3+ < Mg2+ < Na+ < F– < O2– < N3– All are isoelectronic speci...
(3) Antihistamine Explanation: Synthetic drugs, brompheniramine (Dimetapp) act as antihistamines.
(1) CH3COOH Explanation: Graph represent variation of λMC with respect to √C for weak electrolyte.
ΔGº = - nF E0cell 17.37 x 103 = - 3 x 96500 x E0cell E0cell = - 0.06 V
(2) LiAlH4 Explanation: CH3CH2C ≡ N + LiAlH4 → CH3CH3 - CH2 - NH2 NaBH4 does not reduce R–CN.
(3) [Xe] 4f7 and 7.9 Explanation: 64Gd = [Xe] 4f7 5d16s2 64Gd3+ = [Xe] 4f7 No. of unpaired electron = 7 μ = √n(n + 2)BM = √63 = 7.93 Bm
(1) tetrahedral [PCl4]+ and octahedral [PCl6]- Explanation: 2PCl5 → [PCl4]+(Tetrahedral) [PCl6]-
(1) 4NA Explanation: For BCC Z = 2 d = Z x M/NA x Volume 6.17 = 2 x M/6.02 x 1023 x [3 x 10-8]3 6.17 = 2 x M/6.02 x 2.7 M = 50 No. of mo...
(4) 6s, 4f, 5d, 6p Explanation: In 6th period 6s, 4f, 5d and 6p orbitals are gradually filled.
(2) eutrophication Explanation: (2) Clean water would have B.O.D value of less than 5 ppm whereas highly polluted water cloud have a B.O.D value o...
(4) the temperature dependence of the standard Gibbs energies of formation of some metal oxides. Explanation: Ellingham diagram is graph of ΔGº vs...