# Chemistry

The U.S. Food and Drug Administration lists dichloromethane (CH2Cl2) and carbon tetrachloride (CCL4) among the many cancer-causing organic compounds. what are the partial pressures of these substances in the vapor above a mixture containing 1.75 mol of CH2Cl2 and 1.95 mol of CCl4 at 23.5 degrees C? the vapor pressures of pure CH2Cl2 and CCl4 at 23.5 degrees C are 352 torr and 118 torr, respectively. I'm a little confused about how to set it up

1. 👍
2. 👎
3. 👁
1. You have moles of each.
Find total moles = 1.75 + 1.95 = ??
mole fraction CH2Cl2 = moles CH2Cl2/total moles.

mole fraction CCl4 = moles CCl4/total moles.

partial pressure is pp.
pp CH2Cl2 = XCH2Cl2*PoCH2Cl2 and
pp CCl4 = XCCl4*PoCCl4
Where Po is the normal vapor pressure of either CH2Cl2 or CCl4.

1. 👍
2. 👎

## Similar Questions

1. ### Chemistry

H(f) Cl= 121.3 kj H(f) C= 716.7 H(f) CCl4= -95.7 calculate the average molar bond enthalpy of the carbon-chlorine bond in a CCl4 molecule. I have tried to figure it out and keep getting the wrong answer. Please help!

2. ### Chemistry

Calculate the total quantity of heat required to convert 25.0 g of liquid CCl4(l) from 25.0°C to gaseous CCl4 at 76.8°C (the normal boiling point for CCl4)? The specific heat of CCl4(l) is its heat of fusion is and its heat of

3. ### Physics

The average coefficient of volume expansion for carbon tetrachloride is 5.81 10-4 (°C)-1. If a 43.0 gal steel container is filled completely with carbon tetrachloride when the temperature is 10.0°C, how much will spill over when

4. ### CHEM - PLS help!!

What would the equation look like if you added bromine (Br) in the presence of CH2Cl2 (Dichloromethane) to cyclohexanol (C_6H_11 OH). Would the solution become saturated or not??? What would the colour change be...if any?? Would a

1. ### Chemistry

How many carbon tetrachloride (CCl4) molecules are in 3.00 mol of CCl4? How many carbon atoms? How many chlorine atoms? How many total atoms? I have no idea how to do all of this =\

2. ### Chemistry

Carbon tetracholoride is made according to the following reaction: carbon disulfide + chlorine gas yields carbon tetrachloride and disulfur dichloride. Write the correct balanced equation and then determine how many grams of CS2

3. ### science 20-1

which are covalent and which are ionic? • carbon tetrachloride, CCl4(l) • hydrogen fluoride, HF(g) • potassium iodide, KI(s) • magnesium oxide, MgO(s) . I got that they are all ionic but that doesn't seem right

4. ### Chem

Of the following compounds, which would you expect to have the lowest vapor pressure at room temperature: CHCl3 , CH2Cl2, CH3Cl or CCl4 ? Hint: base your decision mainly on dispersion forces. I believe the answer is CH3Cl but I am

1. ### chemistry

A 2.00 g sample of a particular compound was dissolved in 15.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85ºC. For pure CCl4, TB = 76.50ºC and KB = 5.03°C·kg/mol Calculate the

2. ### Science

When methane (CH4) combines with carbon tetrachloride , dichloromethane (CH2Cl2) is formed.

3. ### Chemistry

A solution of iodine (I2) in carbon tetra-chloride(CCl4) is used when iodine is needed for certain chemical tests. how much iodine must be added to prepare a 0.480 m solution of iodine in CCl4 if 100.0g of carbon tetra-chloride is

4. ### Chemistry

How many grams of dichloromethane result from reaction of 2.62 kg of methane if the yield is 43.5 %? CH4+2Cl -> CH2Cl2+2HCl