Problem: A toxicologist studying mustard gas, S(CH2CH2Cl)2, a blistering agent, prepares a mixture of 0.675 M SCl2 and 0.973 M C2H4 and allows it to react at room temperature (20.0°C):SCl2(g) + 2C2H4(g) ⇌ S(CH2CH2Cl)2(g)At equilibrium, [S(CH2CH2Cl)2] = 0.350 M. Calculate Kp.

🤓 Based on our data, we think this question is relevant for Professor Gao's class at EKU.

FREE Expert Solution

Equilibrium equation: SCl2(g) + 2C2H4(g) ⇌ S(CH2CH2Cl)2(g)


When dealing with equilibrium:

• Kc → equilibrium units are in molarity 
• Kp → equilibrium units in terms of pressure


Kc is an equilibrium expression:

Kc=productsreactants=[S(CH2CH2Cl)2][SCl2][C2H4]2


Kp and Kc are related:


Kp=KcRT∆n


 ICE Chart



At equilibrium: [S(CH2CH2Cl)2] = x = 0.350 M


  • [SCl2] = 0.675 - 0.350 = 0.325 M
  • [C2H4] = 0.973 - 2(0.350) = 0.273 M


Kc=[S(CH2CH2Cl)2][SCl2][C2H4]2Kc=0.3500.3250.2732

Kc = 14.45

View Complete Written Solution
Problem Details

A toxicologist studying mustard gas, S(CH2CH2Cl)2, a blistering agent, prepares a mixture of 0.675 M SCl2 and 0.973 M C2H4 and allows it to react at room temperature (20.0°C):
SCl2(g) + 2C2H4(g) ⇌ S(CH2CH2Cl)2(g)
At equilibrium, [S(CH2CH2Cl)2] = 0.350 M. Calculate Kp.

Learn this topic by watchingICE Chart Concept Videos
All Chemistry Practice Problems ICE Chart Practice Problems
Q.In an analysis of interhalogen reactivity, 0.500 mol of ICl was placed in a 5.00-L flask, where it decomposed at a high T:2ICl(g) ⥫⥬ I2(g) + Cl2(g)Cal...
Q.Nitrogen dioxide decomposes according to the reaction2 NO2(g) ⇌ 2 NO(g) + O2(g)where Kp = 4.48×10−13 at a certain temperature. If 0.75 atm of NO2 is a...
Q.Even at high T, the formation of NO is not favored: N2(g) + O2(g) ⇌ 2NO(g)         Kc = 4.10×10−4 at 2000°C What is [NO] when a mixture of 0.20 mol of...
Q.Hydrogen sulfide decomposes according to the following reaction, for which K c = 9.30×10−8 at 700°C: 2H2S(g) ⥫⥬ 2H2(g) + S2(g)If 0.45 mol of H2S is pl...
See all problems in ICE Chart

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the ICE Chart concept. You can view video lessons to learn ICE Chart. Or if you need more ICE Chart practice, you can also practice ICE Chart practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Gao's class at EKU.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.