TS EAMCET · Chemistry · Thermodynamics (C)
For which one of the following reactions, the entropy change is positive?
- A \(\mathrm{H}_2(g)+\frac{1}{2} \mathrm{O}_2(g) \longrightarrow \mathrm{H}_2 \mathrm{O}(l)\)
- B \(\mathrm{Na}^{+}(g)+\mathrm{Cl}^{-}(g) \longrightarrow \mathrm{NaCl}(s)\)
- C \(\mathrm{NaCl}(I) \longrightarrow \mathrm{NaCl}(\mathrm{s})\)
- D \(\mathrm{H}_2 \mathrm{O}(l) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{g})\)
Answer & Solution
Correct Answer
(D) \(\mathrm{H}_2 \mathrm{O}(l) \longrightarrow \mathrm{H}_2 \mathrm{O}(\mathrm{g})\)
Step-by-step Solution
Detailed explanation
Evaporation of water in an open vessel is a process which takes place by itself, by absorption of heat from the surroundings, because the gaseous water molecules are more random than the liquid water molecules.…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Which of the following reactions are used in the preparation of aliphatic primary amines? I. Gabriel-phthalimide reaction II. Hoffmann Bromamide reaction III. Carbylamine reaction IV. Sandmayer reactionTS EAMCET 2023 Easy
- Match the following
List-1 (Element) List-2(Block) A Cd I f-block B Eu II s-block C Se III d-block D Ba IV p-block
The correct answer isTS EAMCET 2025 Easy - The reagent used in the preparation of aspirin from salicylic acid isTS EAMCET 2002 Easy
- The number of chlorine \((\mathrm{Cl})\) atoms in the structure of DDT molecule isTS EAMCET 2025 Easy
- The experimental depression in freezing point of a dilute solution is \(0.025 \mathrm{~K}\). If the van't Hoff factor (i) is 2.0 , the calculated depression in freezing point (in \(\mathrm{K}\) ) isTS EAMCET 2016 Medium
- The bond enthalpies of heavy hydrogen, \(\mathrm{O}-\mathrm{O}\) and \(\mathrm{D}-\mathrm{O}\) are \(+400,+498\) and \(+490 \mathrm{~kJ} \mathrm{~mol}^{-1}\), respectively. The \(\Delta_{\mathrm{r}} \mathrm{H}^{\circ}\) of the reaction to produce \(\mathrm{D}_2 \mathrm{O}\) isTS EAMCET 2022 Medium
More PYQs from TS EAMCET
- TS EAMCET 2018 Medium
- A car is travelling with linear velocity ' \(\mathrm{V}\) ' on a circular road of radius ' \(r\) '. If its velocity is increasing at a rate of ' \(a\) ' \(\mathrm{ms}^{-2}\), then the resultant acceleration will beTS EAMCET 2023 Medium
- A stiff spring having spring constant \(k=400 \mathrm{~N} / \mathrm{m}\) is attached to the floor vertically. A mass \(m=10 \mathrm{~kg}\) is placed on top of the spring. The block oscillates if it is pressed downward and released. Find the extension in the spring at which the block loses contact with spring. (Take, \(g=10 \mathrm{~m} / \mathrm{s}^2\) )
TS EAMCET 2020 Medium - A metallic wire with tension \(T\) and at temperature \(30^{\circ} \mathrm{C}\) vibrates with its fundamental frequency of \(1 \mathrm{kHz}\). The same wire with the same tension but at \(10^{\circ} \mathrm{C}\) temperature vibrates with a fundamental frequency of \(1.001 \mathrm{kHz}\). The coefficient of linear expansion of the wire isTS EAMCET 2002 Hard
- If \(B_V\) and \(B_H\) are respectively the vertical and horizontal components of the earth's magnetic field at a place where the angle of dip is \(60^{\circ}\), then the total magnetic field at that place isTS EAMCET 2025 Medium
- The distance between the two lines represented by \(8 x^2-24 x y+18 y^2-6 x+9 y-5=0\) isTS EAMCET 2010 Easy