10. Nitrous oxide (N2O) can be obtained by the thermal decomposition of ammonium nitrate (NH4NO3). (a) Write a balanced equation for the reaction. (b) In a certain experiment, a student obtains 0.340 L of the gas at 718 mmHg and 24°C. If the gas weighs 0.580 g, calculate the value of the gas constant.
Answer:
a) Balanced equation
NH4NO3 --------> N2O + 2H2O
b) from equation above;
1 mol of NH4NO3 ---------> 1 mol of N2O
thus, 0.46 mol of NH4NO3 -------> 0.46 mol of N2O
mass of N2O = 0.46 x 44 molar mass of N2O
= 20.24 gram of N2O
AJ · 1 decade ago
