Question
What are extensive qualities and intensive qualities? Explain.

Answer

SELF

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Although geometries of NH3 and H2O molecules are distorted tetrahedral, bond angle in water is less than that of ammonia. Discuss.
For the reaction:

$\text{N}_2(\text{g})+3\text{H}_2(\text{g})\rightleftharpoons2\text{NH}_3(\text{g})$

at 400K, Kp = 41. Find the value of Kp for each of the following reactions at the same temperature.

  1. $\text{2NH}_3(\text{g})\rightleftharpoons\text{N}_2(\text{g})+3\text{H}_2(\text{g})$

  2. $\frac{1}{2}\text{Na}(\text{g})+\frac{3}{2}\text{H}_2(\text{g})\rightleftharpoons\text{NH}_3(\text{g})$

  3. $2\text{N}_2(\text{g})+6\text{H}_2(\text{g})\rightleftharpoons4\text{NH}_3(\text{g})$

Emission transitions in the Paschen series end at orbit n = 3 and start from orbit n and can be represeted as $\text{v}=3.29\times10^{15}(\text{Hz})\Big[\frac{1}{3^2}-\frac{1}{\text{n}^2}\Big]$
Calculate the value of n if the transition is observed at 1285nm. Find the region of the spectrum.
What is the equilibrium concentration of each of the substances in the equilibrium when the initial concentration of ICl was 0.78M?
$2\text{ICI (g)}\rightleftharpoons\text{I}_2\text{ (g) + Cl}_2\text{ (g)};\text{ K}_{\text{c}}=0.14$
What is the minimum volume of water required to dissolve 1g of calcium sulphate at 298K? (For calcium sulphate, Ksp is 9.1 × 10–6).
What are the various factors due to which the ionization enthalpy of the main group elements tends to decrease down a group?
S. No
Column I
Column II
1.
[Mn(CO)5]-
+6
2.
[Mn2(CO)10]
+2
3.
K4[Mn(CN)6]
0
4.
K2MnO4
-1
Define the law of multiple proportions. Explain it with two examples. How does this law point to the existance of atoms?
What is meant by bond order? Calculate bond order of : $N _2, O _2, O _2^{+}$and $O _2^{-}$.
  1. Use the following reactions to arrange the elements A, B, C and D in order of their redox reactivity:
  1. A + B+ → At + B
  2. B + D+ → B+ +D
  3. C+ + D → No reaction
  4. B+C+ → B+ + C
  1. On the basis of above redox activity series, predict which of the following reactions would you expect to occur?
  1. A+ + C → A+ C+
  2. A+ + D → A+ D+