× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
Home Q & A Board Biology-Related Homework Help Biochemistry
New Topic  
vanvinny vanvinny
wrote...
Posts: 1
Rep: 0 0
8 years ago
Hydrochloric acid reacts with aluminum to produce hydrogen gas according to the reaction below.

6 HCl(aq) + 2 Al(s) → 2 AlCl3(aq) + 3 H2(g)

50.0 mL HCl was combined with an excess amount of Al and 1.08 L hydrogen gas was produced at 25 °C and 0.827 atm. What was the concentration of HCl?

Gas constant R = 0.0821 L · atm/K · mol
Read 354 times
1 Reply

Related Topics

Replies
wrote...
#1
8 years ago
Solution : 4th option i.e 1.46M Answer

No. of moles of H2(g) produced = PV/RT

=> n = (0.827 * 1.08)/(0.0821*298) = 0.0365 mol

Therefore,

No. of moles of HCl consumed = 0.0365 * (6/3) = 0.073 mol

Thus, Molarity = 0.073/0.05 = 1.46M Answer
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1233 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 321
  
 221
  
 555
Your Opinion
Do you believe in global warming?
Votes: 370
Previous poll results: Who will win the 2024 president election?