An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at
50 ∘C. The vapor...
An aqueous CaCl2 solution has a vapor pressure of 80.2 mmHg at
50 ∘C. The vapor pressure of pure water at this temperature is 92.6
mmHg. Part A What is the concentration of CaCl2 in mass
percent?
An aqueous CaCl2 solution has a vapor pressure of 83.9 mmHg at
50 ∘C. The vapor pressure of pure water at this temperature is 92.6
mmHg. What is the concentration of CaCl2 in mass percent?
An aqueous sodium sulfide solution has a vapor pressure of
80.9mmHg at 50 ?C. The vapor pressure of pure water at this
temperature is 92.6 mmHg. (Assume sodium sulfide completely
dissociates.)
What is the concentration of sodium sulfide in mass percent?
Please show all work.
At 25ºC the osmotic pressure of an aqueous CaCl2 solution is
9545.4 torr; the solution has a density of 1.71 g/mL. Calculate the
new boiling point of this solution in Celsius. Assume the normal
boiling point of water is 100ºC. (MMCaCl2 = 110.984 g/mol; Kb, H2O
= 0.512 ºC/m; Kf, H2O = 1.86ºC/m)
The vapor pressure of ethanol is 1.00 × 102 mmHg at 34.90°C.
What is its vapor pressure at 50.66°C? (ΔHvap for ethanol is 39.3
kJ/mol.)
Please Help! Thanks!
The vapor pressure of water at 45oC is 71.88 mmHg.
What is the vapor pressure of a sugar
(C12H22O11) solution made by
dissolving 54.18 g of sugar in 85.56 g of water?
1. An aqueous solution of calcium chloride, CaCl2, is 3.464 M
and has a density of 1.2816 g cm-3. Assuming you have 1 liter of
this solution answer the following questions.
a) Use the density to calculate the mass of the solution 1281.6
grams of solution
b) Given that you have 1 liter of solution how many moles of
CaCl2 are in the solution? mol CaCl2
c) Calculate the mass of CaCl2 in the solution grams CaCl2
d) Determine the...
KEY PART that is TRICKY for me: (The vapor pressure of water is
23.78 mmHg at 25∘C)
A common way to make hydrogen gas in the laboratory is to place
a metal such as zinc in hydrochloric acid (see the figure). The
hydrochloric acid reacts with the metal to produce hydrogen gas,
which is then collected over water. Suppose a student carries out
this reaction and collects a total of 154.0 mL of gas at a pressure
of 742 mmHg...
Cyclohexane (C6H12) has a vapor pressure of 99.0 torr at 25°C.
What is the vapor pressure depression (in torr) of cyclohexane
above a solution of 10.0 g naphthalene (C10H8) in 70.0 g
cyclohexane at 25°C?
The vapor pressure of water at 20 °C is 17.5 torr. A 18.2%
solution of the nonvolatile solute ethylene glycol, C2H4(OH)2, in
water is prepared. Calculate the vapor pressure of the solution to
three significant figures.