Increasing order of stability of the resonance structures is :
Choose the correct answer from the options given below :
For independent process at 300 K
Process | $$\mathrm{\Delta H/kJ~mol^{-1}}$$ | $$\mathrm{\Delta S/J~K^{-1}}$$ |
---|---|---|
A | $$-25$$ | $$-80$$ |
B | $$-22$$ | 40 |
C | 25 | $$-50$$ |
D | 22 | 20 |
The number of non-spontaneous process from the following is __________
When $$\mathrm{Fe_{0.93}O}$$ is heated in presence of oxygen, it converts to $$\mathrm{Fe_2O_3}$$. The number of correct statement/s from the following is ________
A. The equivalent weight of $$\mathrm{Fe_{0.93}O}$$ is $${{\mathrm{Molecular\,weight}} \over {0.79}}$$
B. The number of moles of Fe$$^{2+}$$ and Fe$$^{3+}$$ in 1 mole of $$\mathrm{Fe_{0.93}O}$$ is 0.79 and 0.14 respectively
C. $$\mathrm{Fe_{0.93}O}$$ is metal deficient with lattice comprising of cubic closed packed arrangement of O$$^{2-}$$ ions
D. The % composition of Fe$$^{2+}$$ and Fe$$^{3+}$$ in $$\mathrm{Fe_{0.93}O}$$ is 85% and 15% respectively
5 g of NaOH was dissolved in deionized water to prepare a 450 mL stock solution. What volume (in mL) of this solution would be required to prepare 500 mL of 0.1 M solution? _____________
Given : Molar Mass of Na, O and H is 23, 16 and 1 g mol$$^{-1}$$ respectively