Home
Class 11
CHEMISTRY
When 4g of iron is burnt to ferric oxide...

When `4g` of iron is burnt to ferric oxide at constant pressure, `29.28KJ` of heat is evolved. What is the enthalpy of formation of ferric oxide (At wt. of `Fe=56`)

A

819.84 kJ

B

40.99 kJ

C

81.98 kJ

D

409.0 kJ

Text Solution

Verified by Experts

The correct Answer is:
A
`2Fe+(3)/(2)O_(2)rarr Fe_(2)O_(3)`
`"4 g of Fe"rarr" 29.28 KJ of Heat"`
`"56g of Fe "rarr?`
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCEPTS OF CHEMISTRY

    NARAYNA|Exercise EXERCISE - II (H.W)(METHODS OF EXPRESSING CONCENTRATION)|14 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    NARAYNA|Exercise EXERCISE - III|31 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    NARAYNA|Exercise EXERCISE - II (H.W)(PERCENTAGE WEIGHT OF ELEMENTS IN COMPOUNDS MOLECULAR FORMULA & EMPERICAL FORMULA)|8 Videos

  • SOME BASIC CONCEPTS IN CHEMISTRY STOICHIOMETRY (PART-I)

    NARAYNA|Exercise All Questions|555 Videos

  • SOME BASIC PRINCIPLES AND TECHNIQUES

    NARAYNA|Exercise EXERCISE -IV (QUALITATIVE AND QUANTITATIVE ANALYSIS OF ORGANIC OF COMPOUNDS)|8 Videos

Similar Questions

Explore conceptually related problems

When 5 g of sulphur is burnt to SO_(2) , 46 kJ of heat is liberated. What is the enthalpy of formation of sulphur dioxide?

Heat of formation off SO_(2) is -298 kJ. What is the heat of combustion of 4 g of S?