$$2 \mathrm{NO}+2 \mathrm{H}_{2} \rightarrow \mathrm{N}_{2}+2 \mathrm{H}_{2} \mathrm{O}$$

The above reaction has been studied at $$800^{\circ} \mathrm{C}$$. The related data are given in the table below

Reaction serial number | Initial Pressure of $${H_2}/kPa$$ | Initial Pressure of $$NO/kPa$$ | Initial rate $$\left( {{{ - dp} \over {dt}}} \right)/(kPa/s)$$ |
---|---|---|---|

1 | 65.6 | 40.0 | 0.135 |

2 | 65.6 | 20.1 | 0.033 |

3 | 38.6 | 65.6 | 0.214 |

4 | 19.2 | 65.6 | 0.106 |

The order of the reaction with respect to NO is ___________.

For a reaction $$\mathrm{A} \rightarrow 2 \mathrm{~B}+\mathrm{C}$$ the half lives are $$100 \mathrm{~s}$$ and $$50 \mathrm{~s}$$ when the concentration of reactant $$\mathrm{A}$$ is $$0.5$$ and $$1.0 \mathrm{~mol} \mathrm{~L}^{-1}$$ respectively. The order of the reaction is ______________ . (Nearest Integer)

For the decomposition of azomethane.

CH_{3}N_{2}CH_{3}(g) $$\to$$ CH_{3}CH_{3}(g) + N_{2}(g), a first order reaction, the variation in partial pressure with time at 600 K is given as

The half life of the reaction is __________ $$\times$$ 10^{$$-$$5} s. [Nearest integer]

The half life for the decomposition of gaseous compound $$\mathrm{A}$$ is $$240 \mathrm{~s}$$ when the gaseous pressure was 500 Torr initially. When the pressure was 250 Torr, the half life was found to be $$4.0$$ min. The order of the reaction is ______________. (Nearest integer)