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Types of Catalysis

Why is nitrog...

Question

Why is nitroglycerine explosive in nature?

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Solution

Nitroglycerine is a heavy, colourless, toxic oil, and unstable. Even on receiving slightest shock can result in spontaneous detonation.
Normally an explosion is a rapid combustion, the three nitrate groups which are attached directly to a hydrocarbon releases a large amount of energy (exothermic reaction). The molecule detonate to form new molecules with strong, stable bonds, such as nitrogen and carbon monoxide.

$4 C_{3} H_{5} N_{3} O_{9} \to 6 N_{2} + 12 C O + 10 H_{2} O + 7 O_{2}$

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Q. Nitro glycerine is used as an explosive. The equation for the explosive reaction is

4 C_{3} H_{5} (l) ((N O_{3}))_{3} \to 12 C O_{2} (g) + 10 H_{2} O (l) + 6 N_{2} (g) + O_{2} (g)

(Atomic mass of

C = 12, H = 1, N = 14, O = 16)

i) How many moles does the equation show for i) Nitroglycerine ii) gas molecules produced?
ii) How many moles of gas molecules are obtained from

1

mole of nitroglycerine?
iii) What is the mass of

1

mole of nitroglycerine?

Q. Which of the following halide of nitrogen is not explosive in nature?

State True or False.

N F_{3}

N C l_{3}

N I_{3}

are explosive in nature.

Q. Assertion :Decomposition of nitroglycerin takes place violently. Reason: The decomposition of nitroglycerin is autocatalysed reaction.

Q. On addition of small amount of

K M n O_{4}

c o n c . H_{2} S O_{4}

, a green oily compound is obtained which is highly explosive in nature. Identify the compound from the following.

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