Calculate the molar concentration of oxygen in water at 25C for apartial pressur

Question

Calculate the molar concentration of oxygen in water at 25C for apartial pressure of 23atm. The Henry's law constant for oxygen is1.3x10^-3.

and

A solution of vinegar is 5.14% by mass acetic acid in water.Assuming the density of the vinegar is 1.00g/mL what is themolarity of the acetic acid?

Basically, I've been stuck on these same two problems for over anhour. I know I'm missing something blatantly obvious, but I can'tfor the life of me figure it out. I need some serious help. Thanks.Also, I know for the first I need to convert the numerator to molesand the denominator to Liters, but my brain doesn't seem toremember how to do that. Sorry.

Explanation / Answer

I know to do the 2nd question only: A solution of vinegar is 5.14% by mass acetic acid in water.Assuming the density of the vinegar is 1.00g/mL what is themolarity of the acetic acid? Assume the volume is 1000mL Density = mass/volume 1 = mass/1000 Mass of solution = 1000g Mass of acetic acid = 1000 x 5.14% = 51.4g n(CH3COOH) = m/M = 51.4/60.05 = 0.856mol c(CH3COOH) = n/v = 0.856/1 = 0.856M Hope this helps!

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.