Calculate the average molar bond enthalpy of the carbon-hydrogen bond in a ch4 molecule.


Asked by maham237 @ in Chemistry viewed by 436 People

Answered by maham237 @



Answer:

415.825 kJ/mol.

Explanation:

Average enthalpy = \Delta H_f(CH_4)-4\Delta H_f(H)-\Delta H_f(C)

Now, \Delta H_f(CH_4)=-74.6 kJ/mol

\Delta H_f(H)=218 kJ/mol

\Delta H_f(C)=716.7 kJ/mol

( SOURCE INTERNET)

Putting all these values above.

We get,

Average enthalpy=-1663.3 kJ.

Therefore, averagemolar bond enthalpy= \dfrac{1663.3 }{4}=415.825\ kJ/mol.

Hence, this is the required solution.


Similar Questions

In a water molecule two hydrogen atoms are bonded to

Asked by maham237 @ in Chemistry viewed by 304 persons

In a water molecule, two hydrogen atoms bind to one oxygen atom. How many lone pairs of electrons will be shown around each hydrogen atom in the Lewis structure of …

Number of hydrogen bonded water molecules in cuso4 5h2o

Asked by admin @ in Chemistry viewed by 319 persons

B) how many hydrogen bonded water molecules are present in cuso4.5h2o.

How many hydrogen bonds can a single water molecule have

Asked by admin @ in Chemistry viewed by 282 persons

22. A single water molecule can form how many hydrogen bonds at a time

Which compound has the strongest hydrogen bonding between its molecules

Asked by maham237 @ in Chemistry viewed by 318 persons

1. HBr 2. HF 3. HCl 4. HI

How many hydrogen bonds can a single water molecule form

Asked by admin @ in Chemistry viewed by 306 persons

22. A single water molecule can form how many hydrogen bonds at a time

Calculate the mass of a molecule of carbon dioxide

Asked by admin @ in Chemistry viewed by 306 persons

Calculate the mass of a molecule of carbon dioxide in gram

Calculate the approximate enthalpy change , δh∘, for the combustion of methane: ch4+2o2⇌2h2o+co2

Asked by maham237 @ in Chemistry viewed by 459 persons

ΔHrxn from a given table: CH4 = 1656 kJ/mol O2 = 498 kJ/mol H2O = 928 kJ/mol CO2 = 1598 kJ/mol ΔHrxn = [(1656) + (2*498)] - [(2*928) + (1598)] …

Calculate the molar mass of the following h2o co2 ch4

Asked by admin @ in Chemistry viewed by 407 persons

Calculate the molar mass of he following : (i) H2O (ii) CO2 (iii) CH4 Ncert solutions for Class 11th Chemistry Part - 1 Chapter 1 Exercise 1

How do you calculate your average speed for a trip

Asked by admin @ in Physics viewed by 330 persons

*please please help* Suppose you are going on a car trip with your family. 1. How could you determine the average speed for the first day of the trip? Be …

How to calculate average annual growth rate of real gdp

Asked by admin @ in Business viewed by 289 persons

A nation's average annual real GDP growth rate is 2.5 percent. Based on the rule of 70, the approximate number of years that it would take for this nation's real …

What type of bond is joining the two hydrogen atoms

Asked by admin @ in Chemistry viewed by 316 persons

What type of bond is joining the two hydrogen atoms? there are 2 hydrogen atoms with a pair of electrons shared between these 2 atoms. what type of bond is …

The ionisation enthalpy of hydrogen atom is 1.312

Asked by admin @ in Science viewed by 335 persons

The ionization energy of hydrogen atom is 1.312 into 10 raise to power 6 joule/mol calculate the energy required to excit and electron in a hydrogen from ground state to …

The ionization enthalpy of hydrogen atom is 1.312

Asked by admin @ in Science viewed by 334 persons

The ionization energy of hydrogen atom is 1.312 into 10 raise to power 6 joule/mol calculate the energy required to excit and electron in a hydrogen from ground state to …

In diamond each carbon atom is bonded to

Asked by admin @ in Science viewed by 313 persons

In diamond, each carbon atom is bonded to four other carbon atoms to form (a) a hexagonal array (b) a rigid three-dimensional structure (c) a structure in the shape of …

Most viewed questions in Chemistry


Discuss sn2 mechanism of methyl bromide using aqueous koh

Asked by admin @ in Chemistry viewed by 2161 persons


Comparing lactose percentage between whole milk and powdered milk

Asked by admin @ in Chemistry viewed by 1897 persons


Lewl letpa

Asked by maham237 @ in Chemistry viewed by 1520 persons



50 examples of unbalanced chemical equations with answers

Asked by admin @ in Chemistry viewed by 1361 persons


Chromium metal is immersed in an aqueous solution of cobalt(ii) chloride.

Asked by maham237 @ in Chemistry viewed by 1288 persons


Prepare a chart giving detailed information of carbon compounds

Asked by admin @ in Chemistry viewed by 1240 persons



Which 1 mole sample has the least entropy

Asked by maham237 @ in Chemistry viewed by 1233 persons


If you are given the assignment to cut raw poultry

Asked by maham237 @ in Chemistry viewed by 1223 persons


Effect of succinic acid on cst of phenol water system

Asked by admin @ in Chemistry viewed by 1216 persons



The reaction between aluminium powder and anhydrous barium nitrate

Asked by maham237 @ in Chemistry viewed by 1177 persons


Cnh4 lewis structure

Asked by maham237 @ in Chemistry viewed by 1112 persons


2 3 dihydroxypropanal

Asked by maham237 @ in Chemistry viewed by 1021 persons



Select true statements about the pentose phosphate pathway

Asked by maham237 @ in Chemistry viewed by 1005 persons


Crossword puzzle on carbon and its compounds class 10

Asked by admin @ in Chemistry viewed by 981 persons


Ionic bond calculator

Asked by maham237 @ in Chemistry viewed by 959 persons