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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Why soda water bottle kept at room temperature fizzes on opening? - Chemistry

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प्रश्न

Why soda water bottle kept at room temperature fizzes on opening?

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उत्तर

To increase the solubility of CO2 in soft drinks, the soda water bottles are sealed under high pressure. When the bottle is opened at room temperature under normal atmosphere conditions, the pressure inside the bottle decreases to atmospheric pressure and excess CO2 fizzes out.

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अध्याय 2: Solutions - Exercises [पृष्ठ २५]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
अध्याय 2 Solutions
Exercises | Q III. 42. (b) | पृष्ठ २५

संबंधित प्रश्न

Fill in the blanks by choosing the appropriate word/words from those given in the brackets: 

Ideal solutions obey ………. law and they …………. form azeotropic mixtures.

(Henry’s, aldol condensation, absence, do not, ohm, Raoult’s, increases, common ion effect, easily, three, solubility product, ohm-1, two, four, ohm-1, cm2, Cannizzaro, ohm-1 cm-1, zero, decreases, presence)


The molality of a solution containing 1.8 g of glucose dissolved in 250 g of water is


Which of the following concentration terms is/are independent of temperature


Two liquids X and Y on mixing gives a warm solution. The solution is ______.


Which solution has the lower freezing point? 10 g of methanol (CH3OH) in 100g g of water (or) 20 g of ethanol (C2H5OH) in 200 g of water.


If two liquids A and B form minimum boiling azeotrope at some specific composition then ______.


Intermolecular forces between two benzene molecules are nearly of same strength as those between two toluene molecules. For a mixture of benzene and toluene, which of the following are not true?

(i) ∆mix H = zero

(ii) ∆mix V = zero

(iii) These will form minimum boiling azeotrope.

(iv) These will not form ideal solution.


What is “semi permeable membrane”?


Assertion: Molarity of a solution in liquid state changes with temperature.

Reason: The volume of a solution changes with change in temperature.


Assertion: When a solution is separated from the pure solvent by a semipermeable membrane, the solvent molecules pass through it from pure solvent side to the solution side.

Reason: Diffusion of solvent occurs from a region of high concentration solution to a region of low concentration solution.


How many times more hydrogen ions in a solution with a pH of 3 than in a solution with a pH of 6


The pH of a solution of hydrochloric acid is 1.5. Calculate the concentration of the acid.


Which of the following gave the idea of a nucleus of the atom?


While titration dilute HCl solution with aqueous NaOH, which of the following will not be required?


If liquids A and B form an ideal solution, the ______.


Assertion (A): The enthalpy of mixing Δmix H is equal to zero for an ideal solution.

Reason (R): For an ideal solution the interaction between solute and solvent molecules is stronger than the interactions between solute-solute or solvent-solvent molecules.


Suggest the most important type of intermolecular attractive interaction in the following pair.

NaClO4 and water


Suggest the most important type of intermolecular attractive interaction in the following pair.

Methanol and acetone


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