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Chapter 1: Problem 27

Dalton's law of partial pressures cannot hold good for (a) \(\mathrm{NO}_{2}+\mathrm{O}_{2}\) (b) \(\mathrm{H}_{2}+\mathrm{Cl}_{2}\) (c) \(\mathrm{CO}_{2}+\mathrm{O}_{2}\) (d) \(\mathrm{NH}_{3}+\mathrm{He}\)

Short Answer

Expert verified
The gas pairs that do not follow Dalton's Law of Partial Pressures due to chemical reactions are: (a) \(\mathrm{NO}_{2}+\mathrm{O}_{2}\) (b) \(\mathrm{H}_{2}+\mathrm{Cl}_{2}\)

Step by step solution

01

Identify the chemical reactions

In this step, we need to identify whether any of the given pairs of gases undergo a chemical reaction when mixed. (a) \(\mathrm{NO}_{2}+\mathrm{O}_{2}\) (b) \(\mathrm{H}_{2}+\mathrm{Cl}_{2}\) (c) \(\mathrm{CO}_{2}+\mathrm{O}_{2}\) (d) \(\mathrm{NH}_{3}+\mathrm{He}\)
02

Establish the reactions

Here, we establish the reactions that are possible between the given gas pairs: (a) The reaction between \(\mathrm{NO}_{2}\) and \(\mathrm{O}_{2}\) can give rise to \(\mathrm{NO}\) and \(\mathrm{O}_{3}\): \(\mathrm{NO}_{2}+\mathrm{O}_{2}\rightleftharpoons\mathrm{NO}+\mathrm{O}_{3}\) (b) The reaction between \(\mathrm{H}_{2}\) and \(\mathrm{Cl}_{2}\) can result in the formation of \(\mathrm{HCl}\): \(\mathrm{H}_{2}+\mathrm{Cl}_{2}\rightarrow2\mathrm{HCl}\) (c) There is no possible reaction between \(\mathrm{CO}_{2}\) and \(\mathrm{O}_{2}\): No reaction. (d) There is also no possible reaction between \(\mathrm{NH}_{3}\) and \(\mathrm{He}\): No reaction.
03

Identify the gas pairs violating Dalton's Law

Based on our findings in Step 2, let's identify which of the given gas pairs do not follow Dalton's Law of Partial Pressures due to the occurrence of chemical reactions: (a) \(\mathrm{NO}_{2}+\mathrm{O}_{2}\) - Violates Dalton's Law since there is a reaction between these two gases. (b) \(\mathrm{H}_{2}+\mathrm{Cl}_{2}\) - Violates Dalton's Law due to the reaction between these gases. (c) \(\mathrm{CO}_{2}+\mathrm{O}_{2}\) - Follows Dalton's Law since there is no reaction between these gases. (d) \(\mathrm{NH}_{3}+\mathrm{He}\) - Follows Dalton's Law due to no reactions between these gases.
04

Final answer

Thus, based on the analysis of the given gas pairs, we conclude that Dalton's law of partial pressures cannot hold good for the following gas pairs: (a) \(\mathrm{NO}_{2}+\mathrm{O}_{2}\) (b) \(\mathrm{H}_{2}+\mathrm{Cl}_{2}\)

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Most popular questions from this chapter

State whether the following statements are true or false. The greater the critical temperature of a gas, the easier is the liquefaction of the gas.

\(0.5\) moles of a salt contains "3N" oxygen atoms. Identify the formula of the salt. (a) \(\mathrm{MXO}_{3}\) (b) \(\mathrm{MX}_{2} \mathrm{O}_{3}\) (c) \(\mathrm{M}_{2} \mathrm{XO}_{3}\) (d) \(\mathrm{M}\left(\mathrm{XO}_{3}\right)_{2}\)

Select the correct alternative from the given choices. The ratio by mass of sulphur and oxygen in \(\mathrm{SO}_{2}\) is (a) \(1: 2\) (b) \(2: 1\) (c) \(1: 1\) (d) \(1: 4\)

In a \(2.5 \ell\) flask at \(27^{\circ} \mathrm{C}\) temperature, the pressure of a gas was found to be 8 atm. If \(2.41 \times 10^{23}\) molecules of the same gas are introduced into the container, the temperature changed to \(\mathrm{T}_{2}\). The pressure of gas is found to be \(10 \mathrm{~atm}\). Find out the value of \(\mathrm{T}_{2}\) (a) \(253 \mathrm{~K}\) (b) \(347 \mathrm{~K}\) (c) \(230 \mathrm{~K}\) (d) \(370 \mathrm{~K}\)

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