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Sliva [168]
2 years ago
8

A solution has a hydrogen ion (or hydronium ion) concentration of 3.43 * 10-5

Chemistry
1 answer:
Alex777 [14]2 years ago
3 0

The pH of the solution would be 4.5

What is pH?

It is the degree of acidity or alkalinity of a substance.

The pH of any substance is mathematically given as:

pH = -log [H^+]

In this case,  [H^+] = 3.43 x 10^{-5}

Hence,

pH = -log 3.43 x 10^{-5} = 4.46 = 4.5 to 1 decimal place

More on pH can be found here: brainly.com/question/15289741

#SPJ1

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4 0
3 years ago
At 20 ∘C the vapor pressure of benzene C6H6 is 75 torr and that of toluene C7H8 is 22 torr. Assume that benzene and toluene fo
Olegator [25]

Answer:

a) Xbenzene = 0.283

b) Xtoluene = 0.717

Explanation:

At T = 20°C:

⇒ vapor pressure of benzene (P*b) = 75 torr

⇒ vapor pressure toluene (P*t) = 22 torr

Raoult's law:

  • Pi = Xi.P*i

∴ Pi: partial pressure of i

∴ Xi: mole fraction

∴ P*i: vapor pressure at T

a) solution: benzene (b) + toluene (t)

∴ Psln = 37 torr;   at T=20°C

⇒ Psln = Pb + Pt

∴ Pb = (Xb)*(P*b)

∴ Pt = (Xt)*(P*t)

∴ Xb + Xt = 1

⇒ Psln = 37 torr = (Xb)(75 torr) + (1 - Xb)(22 torr)

⇒ 37 torr - 22 torr = (75 torr)Xb - (22 torr)Xb

⇒ 15 torr = 53 torrXb

⇒ Xb = 15 torr / 53 torr

⇒ Xb = 0.283

b) Xb + Xt = 1

⇒ Xt = 1 - Xb

⇒ Xt = 1 - 0.283

⇒ Xt = 0.717

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