Question

Post-lab Questions: Grahams Law 1. Why was it important to keep the inside of the tube...

Post-lab Questions: Grahams Law

1. Why was it important to keep the inside of the tube dry?

2. How would each of the following affect your calculated molar mass of HCl (incorrectly high, low or no effect)? Explain your answers.

a) A student placed the HCl-soaked cotton in first, and then placed the NH3-soaked cotton on the other end.

b) The temperature of the classroom increased during the lab period and the temperature during each trial was significantly higher than the one before it.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

1) The primary requirement for determination of rates of diffusion using Graham’s law is that we need to work with gases. Hence, drops of concentrated HCl and NH3 are introduced in a perfectly dry test tube and sealed at the same time. HCl and NH3 are soluble in water; hence, if the test tube is not dry, HCl and NH3 will dissolve in the water forming aqueous HCl and NH3 and the purpose of Graham’s law will be defeated.

2) I need the experimental procedure to answer these two questions.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Preparation of acetyl salicyclic acid (Aspirin) post-lab questions 1.) The FeCl3 test you performed on salicylic...
Preparation of acetyl salicyclic acid (Aspirin) post-lab questions 1.) The FeCl3 test you performed on salicylic acid, crude aspirin, and the purified aspirin gave different colors. Comment on the results you obtained in each of these tests in terms of colors and the functional groups present and what does that indicate about the purity of your purified aspirin? I got a dark purple color for saliclyc acid tube. "dark yellow" for crude aspirin tube, "llighter yellow" color for aspirin tube...
Cholera and other diarrheal diseases cause nearly 2 billion cases of diarrhea annually. Cholera toxin and...
Cholera and other diarrheal diseases cause nearly 2 billion cases of diarrhea annually. Cholera toxin and other bacterial toxins cause the intestine to secrete fluid into the lumen of the gut, depleting the extracellular fluid (ECF) volume. If fluid loss is not matched with fluid intake (law of mass balance), the result is severe dehydration, circulatory collapse, and even death. Drinking a rehydration solution is the most rapid and effective way to replace the large volumes of water lost by...
Please answer the following Case analysis questions 1-How is New Balance performing compared to its primary...
Please answer the following Case analysis questions 1-How is New Balance performing compared to its primary rivals? How will the acquisition of Reebok by Adidas impact the structure of the athletic shoe industry? Is this likely to be favorable or unfavorable for New Balance? 2- What issues does New Balance management need to address? 3-What recommendations would you make to New Balance Management? What does New Balance need to do to continue to be successful? Should management continue to invest...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how the firms resources incompetencies support the given pressures regarding costs and local responsiveness. Describe entry modes have they usually used, and whether they are appropriate for the given strategy. Any key issues in their global strategy? casestudy: Atlanta, June 17, 2014. Sea of Delta employees and their families swarmed between food trucks, amusement park booths, and entertainment venues that were scattered throughout what would...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT