Q. 8. The standard heat of combustion of graphite is -393 kJ mol1. Wha – InterviewSolution

InterviewSolution

1.

Q. 8. The standard heat of combustion of graphite is -393 kJ mol1. What will be the heatliberated when 4.8 g graphite is burnt?

Answer»

No. of moles in 4.8 gm of graphite =4.8/12=0.4 moles

Amount of heat liberated=0.4×{-393} kJ=157.2 kJ

Discussion

No Comment Found

Related InterviewSolutions

ne Henry's law and give its two applications
25. When 2 gm of a gas A is introduced into an evaluated flaskkept at 25Â°C, the pressure is found to be one atmosphere. If3 gm of another gas B is then added to the same flask, thetotal pressure becomes 1.5 atm. Assuming ideal gasbehaviour, calculate the ratio of the molecular weightsA.B
3.Write any two applications of osmotic pres
8.What are the harmful effects of plastics especially plastic bags?
8. What are the harmful effects of plastics especially plastic bags?
14. In a group of 50 persons, 14 drink tea but not coffee and 30 drink tea. Find ((0) Hormany drink tea and coffee both () How many drink coffee but not tea.
Write the mechanisms and applications(a) Mannich reaction
Why Solids, Liquids and Gases Have Different Properties
the galvanised article is protected against rusting even if the zinc coating is broken . reason this out???
How glass wool is prepared ? Give itsapplications based on two different properties.(Ans. : Refer Section 3.3.3)