CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Enthalpy of Combustion

The enthalpy ...

Question

The enthalpy change involved in the oxidation of glucose is $- 2880 k J m o l^{- 1}$ 25% of this energy is available for muscular work. If 80 kJ of muscular work is needed to walk one km, what is the maximum distance that a person will walk after eating 120g glucose?

Open in App

Solution

$120 g g l u c o s e = \frac{120 g}{180 g / m o l} = 0.67 m o l$ .
The energy available for muscular work $= 2880 k J / m o l \times 0.67 m o l \times 0.25 = 480 k J$ .
The maximum distance that can a person walk $\frac{480 k J}{80 k J / k m} = 6 k m$

Suggest Corrections

thumbs-up

0

Similar questions

Q. The enthalpy change involved in the oxidation of glucose is -2880 kJ mol

^{- 1}

. Twenty five percent of this energy is available for muscular work. If 100 kJ of muscular work is needed to walk one kilometer, what is the maximum distance that a person will be able to walk after eating 125 g of glucose?

Q. The enthalpy change involved in the oxidation of glucose is 2880 kJ/mol.

25 %

of this energy is available for muscular work. If 100 kJ of muscular work is required to walk 1 km, calculate the maximum distance that can be covered by a person who as consumed 120 g of glucose

Q. The enthalpy change involved in the oxidation of glucose is 2880 kJ/mol.

25 %

of this energy is available for muscular work. If 100 kJ of muscular work is required to walk 1 km, calculate the maximum distance that can be covered by a person who as consumed 120 g of glucose

Q. Standard molar enthalpy of combustion of glucose is

- 2880 k J

25

% of energy is available for muscular work and

1.0 k m

90 k J

of energy, what is the maximum distance (in km) a person can walk after eating

90 g

150 k J

of energy is needed for a man to walk a distance of

1 k m

, then how much of glucose one has to consume to walk a distance of

5 k m

, provided that only

30

% of the energy available for muscular work. (The enthalpy of combustion glucose is

3000 k J {m o l}^{- 1}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Thermochemistry

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Enthalpy of Combustion

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon