Advertisements
Advertisements
प्रश्न
Why soda water bottle kept at room temperature fizzes on opening?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
How is the sign of ΔmixH related to positive deviations from Raoult’s law?
What type of intermolecular attractive interaction exists in the pair of methanol and acetone?
Which of the following concentration terms is/are independent of temperature
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.
The rate at which a solid dissolves in liquid does not depend on ____________.
Which of the following condition is not satisfied by an ideal solution?
Which relationship is not correct?
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.
Explain the terms ideal and non-ideal solutions in the light of forces of interactions operating between molecules in liquid solutions.
Dissociation constant and molar conductance of an acetic acid solution are 1.78 × 10–5 mol L–1 and 48.15 S cm–2 mol–1 respectively. The conductivity of the solution is (considering molar conductance at infinite dilution is 390.5 S cm–2 mol–1)
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.
What type of deviation from Roult’s Law is expected when phenol and aniline are mixed with each other? What change in the net volume of the mixture is expected? Graphically represent the deviation.
Suggest the most important type of intermolecular attractive interaction in the following pair.
n-hexane and n-octane
Suggest the most important type of intermolecular attractive interaction in the following pair.
NaClO4 and water
5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are 63 torr and 78 torr respectively. Which of the following is true regarding the described solution?
