मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Explain with reason sign conventions of ΔS in the following reaction N2(g) + 3H2(g) → 2NH3(g) - Chemistry

Advertisements
Advertisements

प्रश्न

Explain with reason sign conventions of ΔS in the following reaction

N2(g) + 3H2(g) → 2NH3(g)

एका वाक्यात उत्तर

उत्तर

N2(g) + 3H2(g) → 2NH3(g)

The entropy of the system decrease because order decreases.

ΔS is negative.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2012-2013 (March)

APPEARS IN

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

How many atoms constitute one unit cell of a face-centered cubic crystal?


Gold occurs as face centred cube and has a density of 19.30 kg dm-3. Calculate atomic radius of gold (Molar mass of Au = 197)


Face centred cubic crystal lattice of copper has density of 8.966 g.cm-3. Calculate the volume of the unit cell. Given molar mass of copper is 63.5 g mol-1 and Avogadro number Nis 6.022 x 1023 mol-1


An element with molar mass 27 g mol−1 forms a cubic unit cell with edge length 4.05 ✕ 10−8 cm. If its density is 2.7 g cm−3, what is the nature of the cubic unit cell?


Distinguish between Hexagonal and monoclinic unit cells


Explain how much portion of an atom located at (i) corner and (ii) body-centre of a cubic unit cell is part of its neighbouring unit cell.


What is the coordination number of atoms:

(a) in a cubic close-packed structure?

(b) in a body-centred cubic structure?


Calculate the percentage efficiency of packing in case of simple cubic cell.


Explain with reason sign conventions of ΔS in the following reaction

CO2(g) → CO2(g)


A face centred cube (FCC) consists of how many atoms? Explain


Number of types of orthorhombic unit cell is ___________.


An atom located at the body center of a cubic unit cell is shared by ____________.


An element forms a cubic unit cell with edge length 405 pm. Molar mass of this element is 2.7 × 10−2 kg/mol and its density is given as 2.7 × 103 kg/m3. How many atoms of these elements are present per unit cell?


A substance forms face-centered cubic crystals. Its density is 1.984 g/cm3 and the length of the edge of the unit cell is 630 pm. Calculate the molar mass in g/mol?


Gold has a face-centered cubic lattice with an edge length of the unit cube of 407 pm. Assuming the closest packing, the diameter of the gold atom is ____________.


Sodium metal crystallizes in a body-centered cubic lattice with a unit cell edge of 4.29 Å. The radius of the sodium atom is approximate:


The empty space in the body-centered cubic lattice is ____________.


The number of atoms contained in a fcc unit cell of a monoatomic substance is ____________.


Which of the following metal(s) show(s) hexagonal close-packed structure (hcp) and which show face-centered cubic (fcc) structure?


The correct set of quantum numbers for 3d subshell is 


Percentage of free space in body centred cubic unit cell is


If a represents the edge length of the cubic systems, i.e. simple cubic, body centred cubic and face centered cubic, then the ratio of the radii of the sphere in these system will be:-


A solid is formed by 2 elements P and Q. The element Q forms cubic close packing and atoms of P occupy one-third of tetrahedral voids. The formula of the compound is ______.


An element A (Atomic weight = 100) having bcc structure has a unit cell edge length 400 pm. The number of atoms in 10 g of A is ______ × 1022 unit cells.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×