17 public questions tagged with this topic.
Intensive properties do not depend on the amount of substance. Temperature depends on the system’s state, not its size, unlike volume or enthalpy.
Ref: NCERT Class 11 Chemistry > Chapter 5: Thermodynamics > Topic: Thermodynamic Terms - System Surroundings and Types of Systems
In an isochoric process (Δ V = 0), work done w = -PΔ V = 0, regardless of other conditions.
Ref: NCERT Class 11 Chemistry > Chapter 5: Thermodynamics > Topic: Thermodynamic Terms - System Surroundings and Types of Systems
At constant pressure, Δ H = qp = 600 J, w = -200 J (work done by system). Δ U = q + w = 600 - 200 = 400 J.
Ref: NCERT Class 11 Chemistry > Chapter 5: Thermodynamics > Topic: Thermodynamic Terms - System Surroundings and Types of Systems
T₂ = T₁ (V₁/V₂)γ⁻¹ = 450 × (15/30)⁰.⁴ = 450 × (0.5)⁰.⁴ = 450 × 0.7579 = 341 K.
Ref: NCERT Class 11 Chemistry > Chapter 5: Thermodynamics > Topic: Bond Enthalpy and Entropy and Spontaneity
λ₀ = hc/W₀ ≈ 443.7 nm.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Discovery of Subatomic Particles - Electron Proton Neutron
λₑ/λₙ = √(mₙ/mₑ) ≈ 42.8.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Discovery of Subatomic Particles - Electron Proton Neutron
v = √(2KE/m). λ = h/(mv) ≈ 2.805×10⁻¹² m.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Discovery of Subatomic Particles - Electron Proton Neutron
Paschen: n₁=3, n₂=4. λ = 1876 nm.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Discovery of Subatomic Particles - Electron Proton Neutron
E = hc/λ ≈ 4.847×10⁻¹⁹ J.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Discovery of Subatomic Particles - Electron Proton Neutron
Electron has the highest e/m ratio due to its small mass.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Discovery of Subatomic Particles - Electron Proton Neutron
λ = h/(mv). Wavelength inversely proportional to mass. Alpha particle (highest mass) has smallest wavelength.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Discovery of Subatomic Particles - Electron Proton Neutron
Balmer (4→2): λ₁ ≈ 4.861×10⁻⁷ m. Paschen (5→3): λ₂ ≈ 1.281×10⁻⁶ m. Ratio ≈ 0.379.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Discovery of Subatomic Particles - Electron Proton Neutron
