Nitroglycerin is a dangerous powerful explosive that violently decomposes when it is shaken or dropped. the swedish chemist alfred nobel (1833-1896) founded the nobel prizes with a fortune he made by inventing dynamite, a mixture of nitroglycerin and inert ingredients that was safe to handle.

1. write a balanced chemical equation, including physical state symbols, for the decomposition of liquid nitroglycerin ( c3h5no33 ) into gaseous dinitrogen, gaseous dioxygen, gaseous water and gaseous carbon dioxide.

2. suppose 41.0l of carbon dioxide gas are produced by this reaction, at a temperature of −14.0°c and pressure of exactly 1atm . calculate the mass of nitroglycerin that must have reacted. round your answer to 3 significant digits. g

1. 2 C₃H₅N₃O₉(l) ⇒ 3 N₂(g) + 1/2 O₂(g) + 5 H₂O(g) + 6 CO₂(g)

2. 146 g of nitroglycerin.

Explanation:

1. Write a balanced chemical equation, including physical state symbols, for the decomposition of liquid nitroglycerin ( C₃H₅N₃O₉) into gaseous dinitrogen, gaseous dioxygen, gaseous water and gaseous carbon dioxide.

The equation is:

C₃H₅N₃O₉(l) ⇒ N₂(g) + O₂(g) + H₂O(g) + CO₂(g)

Since atomicities in nitroglycerin are odd, it is easier to balance this equation by multiplying this compound by 2. The balanced equation is:

2 C₃H₅N₃O₉(l) ⇒ 3 N₂(g) + 1/2 O₂(g) + 5 H₂O(g) + 6 CO₂(g)

2. Suppose 41.0L of carbon dioxide gas are produced by this reaction, at a temperature of −14.0°C and pressure of exactly 1 atm. Calculate the mass of nitroglycerin that must have reacted.

First, we have to find the moles of CO₂ using the ideal gas equation.

P.V = n . R . T

where,

P is the pressure

V is the volume

n is the number of moles

R is the ideal gas constant (0.08206atm.L/mol.K)

T is the absolute temperature (-14.0 °C + 273.15 = 259.2 K)

According to the balanced equation, 6 moles of CO₂ are formed when 2 moles of C₃H₅N₃O₉ react. And the molar mass of nitroglycerin is 227 g/mol. Then, for 1.93 moles of CO₂:

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