Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

Olympiad workbookNSECThermodynamics (C)

For the following spontaneous process H ₂ O _ ( l ) H ₂ O _ ( s ) at 268 K , which of the following is true?

Options

AS _ sys < 0
BS _ sys >0
CS _ surr < 0
DS _ sys =- S _ surr

Correct answer

A. S _ sys < 0

Step-by-step solution

No Solution

Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

At constant volume, 6.0 mol of H ₂ gas at 0^ C and 100 kPa was heated to 250 kPa . The molar heat of H ₂ at constant pressure ( C _ P )=28.9 ~J ~mol ⁻¹ . ( assume that the heat cap Hydrazine used in rocket fuels can be obtained by the reaction of ammonia and hydrogen peroxide according to the following equation 2 NH ₃( ~g )+ H ₂ O ₂( l ) N ₂ H ₄( l )+2 H ₂ O The daily energy requirement of a teenager is 7800 kJ . As calculated from the data given in the table below, the amount of glucose he has to consume (g) per day assuming that the Three samples of 100 g of water (samples I, II and III), initially kept at 1 atm pressure and 298 K were given the following treatments. Sample I was heated to 320 K and cooled to Given _r H^ =-54.08 ~kJ ~mol ⁻¹ and _r S^ =10.0 ~J ~mol ⁻¹ at 25^ C , the value of ₁₀ K for the reaction A B is Standard molar enthalpy of formation of CO ₂( ~g ) is equal to For the conversion CCl ₄( l ) CCl ₄( ~g ) at 1 bar and 350 K , the correct set of thermodynamic parameters is (Boiling point of CCl ₄ is 77^ C )The work done (kJ) in the irreversible isothermal compression of 2.0 moles of an ideal gas from 1 bar to 100 bar at 25^ C at constant external pressure of 500 bar is Full Thermodynamics (C) list All Olympiad workbook PYQs