Question
Asked Oct 3, 2019
426 views

Elemental phosphorus reacts with chlorine gas according to the equation
P4(s)+6Cl2(g)→4PCl3(l)
A reaction mixture initially contains 45.53 g P4 and 130.9 g Cl2.

Once the reaction has reached completion, what mass (in g) of the excess reactant is left?        
Express the mass in grams to three significant figures.
check_circle

Expert Answer

Step 1

Given that the initial mass of P4 is 45.53 g and mass of Cl2 is 130.9 g. The initial moles of both reactants can be determined.

help_outline

Image Transcriptionclose

mass No.of moles of P molar mass 45.53g 123.90g/mol -0.367mol No.of moles of molar mass mass 130.9g 70.91g/mo -1.846mol

fullscreen
Step 2

From the balanced equation, it can be seen that one mole P4 reacts w...

help_outline

Image Transcriptionclose

P6C14PC 0.367 mol P, reacts with 6x0.367 moles of Cl, (2.202mol Cl,) No.of moles of Cl, required aremore than that of initialmoles of Cl Cl -Limiting reagent P4-Excessreagent

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

General Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: Atmospheric chemistry involves highly reactive, odd-electron molecules such as the hydroperoxyl radi...

A: The rate law of a reaction is expressed as:

question_answer

Q: What is the equation for the half-life of a zero order process?

A: The concentration – time equation for the zero-order reaction is given as,

question_answer

Q: Having difficulty understanding hydrogen bond and how they are formed . Some examples would be great...

A: Hydrogen bonding can take place between a highly electronegative atom and hydrogen. Intramolecular h...

question_answer

Q: How many grams of glucose (MM = 180.2 g/mol) would need to be dissolved in 100.0 g of water to decre...

A: The values are given as follows:

question_answer

Q: Determine the amount of heat required to raise 10 grams of water 5 degree celcius ?

A: Specific heat capacity of water = 4.18 J/g oC

question_answer

Q: Ethanol is a common laboratory solvent and has a density of 0.7890.789 g/mL. What is the mass, in gr...

A: Hi there! The question which you have posted says that the density of 0.7890.789 g/ml. Assuming it t...

question_answer

Q: A tank with a volume of 20.0L contains 80.0g of O2(g) at 37 degrees C. What is the pressure of the g...

A: The pressure for O2 is calculated by using ideal gas equation.  The given information is shown as be...

question_answer

Q: In a hydrocarbon solution, the gold compound (CH3)3 AuPH3 decomposes into ethane (C2 H6) and a diffe...

A: Click to see the answer

question_answer

Q: 320.12−(6108.4/3.5) Express your answer to the appropriate number of significant digits.

A: Rules for significant digitsDigits from 1 to 9 are always significant. Zeros between two other signi...