Question:
The partial pressure of ethane over a solution containing \(6.56 × 10^{–3} g\) of ethane is 1 bar. If the solution contains \(5.00 × 10^{–2} g\) of ethane, then what shall be the partial pressure of the gas?
The partial pressure of ethane over a solution containing \(6.56 × 10^{–3} g\) of ethane is 1 bar. If the solution contains \(5.00 × 10^{–2} g\) of ethane, then what shall be the partial pressure of the gas?
Updated On: Sep 27, 2023
Hide Solution
Verified By Collegedunia
Solution and Explanation
The correct answer is: \( \frac{x}{(2.187\times 10^{-4})}bar\)
Molar mass of ethane \((C_2H_6) = 2\times12 + 6\times1 = 30 \,g mol^{ - 1}\)
Number of moles present in \(6.56 × 10^{ - 3} g\) of ethane \(=\frac{(6.56\times 10^{-3})}{30}\)
\(=2.187 × 10^{- 4} mol\)
Let the number of moles of the solvent be \(x. \)
According to Henry's law,
\(ρ = K_HX\)
\( ⇒1 bar = K_H. \frac{(2.187\times 10^{-4})}{(2.187\times10^{-4}+x)}\)
\(⇒1 bar = KH. \frac{(2.187\times 10^{-4})}{x} \,\,\,\,\,(Since x>>2.187\times10^{-4})\)
\(⇒K_H = \frac{x}{(2.187\times 10^{-4})}bar\)
Molar mass of ethane \((C_2H_6) = 2\times12 + 6\times1 = 30 \,g mol^{ - 1}\)
Number of moles present in \(6.56 × 10^{ - 3} g\) of ethane \(=\frac{(6.56\times 10^{-3})}{30}\)
\(=2.187 × 10^{- 4} mol\)
Let the number of moles of the solvent be \(x. \)
According to Henry's law,
\(ρ = K_HX\)
\( ⇒1 bar = K_H. \frac{(2.187\times 10^{-4})}{(2.187\times10^{-4}+x)}\)
\(⇒1 bar = KH. \frac{(2.187\times 10^{-4})}{x} \,\,\,\,\,(Since x>>2.187\times10^{-4})\)
\(⇒K_H = \frac{x}{(2.187\times 10^{-4})}bar\)
Was this answer helpful?
0
0
Top Questions on Solutions
- Density of 3 M NaCl solution is 1.25 g/mL. The molality of the solution is:
- 20 mL of 2 M NaOH solution is added to 400 mL of 0.5 M NaOH solution. The final concentration of the solution is \(\_\_\_\_\_\) x \(10^{-2}\)M. (Nearest integer)
- A solution is prepared by dissolving 5 g of a non-volatile solute in 200 g of water. It has a vapor pressure of 31.84 mm Hg at 300 K. Calculate the molar mass of the solute.
(Vapor pressure of pure water at 300 K = 32 mm Hg) - What type of deviation is shown by ethanol and acetone mixture ? Give reason. What type of azeotropic mixture is formed by that deviation ?
- Define molal depression constant. How is it related to enthalpy of fusion?
View More Questions
Questions Asked in CBSE CLASS XII exam
- Ankur Sachdeva did his MBA from ITB University. He decided to apply his knowledge of scientific management in the fast food restaurant chain 'Coffee Bean' set up by him. This restaurant was providing burgers, fries, shakes etc, as a part of its menu. Nowadays people are quality conscious, so he was using standardised raw materials, processes, methods, working conditions, machinery etc. The objective was to establish standards of excellence. By doing this he was not only able to reduce the cost but was also able to provide new varieties of burgers, fries and shakes leading to increased turnover. Ankur Sachdeva also believed that there was only one best method to maximise efficiency. As a result he developed best way of grilling burgers, cooking fries and preparing shakes. His main objective was to maximise the satisfaction of customers, which he was able to achieve. Not only to learn the best way of doing a job, but to perform their tasks efficiently, 'Coffee Bean' regularly invests in training and development programmes to equip employees with the necessary skill and knowledge. 'Coffee Bean' believed that efficient employees will produce more and earn more. This will ensure their greatest efficiency and prosperity for both company and workers. The above case highlights the use of Scientific principles and techniques by 'Coffee Bean'. Explain any one such principle and two techniques.
- CBSE CLASS XII - 2024
- Marketing Management
- Preeti started her own cooking channel on 'Youtube Mood Art'. As her subscribers increased, she was not in a position to manage everything on her own. She hired Rahul and Riya to help her with filming editing, lighting and content research. She granted authority to them to operate within prescribed limits. She was thus, able to use her time on high priority activities like developing new recipes and content development etc. As a result, Rahul and Riya were given opportunities to develop and exercise initiative. Preeti was now able to focus on objectives and meet the target of achieving a subscriber base of one million in six months.
(a) Identify the concept of management used by Preeti.
(b) Explain any five points of importance of the concept identified in .- CBSE CLASS XII - 2024
- Organising
- Nishi had gone to a grocery store to make routine purchases. On reaching home, as she took out a Binx tomato chips packet from the bag to give it to her son, she felt that it was underweight. She checked its weight on the kitchen weighing scale and found that it weighed 60 grams, whereas the label on the packet mentioned the weight as 100 grams. She approached the manufacturer and complained. The manufacturer offered her a gift hamper and requested her not to disclose the issue to anyone. Nishi refused to accept the gift hamper and took the issue to a redressal agency.
(a) State two responsibilities discharged by Nishi, as a consumer, in the above case.- CBSE CLASS XII - 2024
- Financial Management and Financial Market
- State any two reliefs that can be granted to Nishi, if the consumer court is satisfied with the genuineness of the complaint.
- CBSE CLASS XII - 2024
- Financial Planning
- Explain 'Advertising', 'Sales Promotion', and 'Public Relations' as elements of the promotion mix.
- CBSE CLASS XII - 2024
- Organising
View More Questions