The reaction that occurs in a breath analyser, a device used to determine the alcohol level in a person's blood stream is

$$2{K_2}C{r_2}{O_7} + 8{H_2}S{O_4} + 3{C_2}{H_6}O \to 2C{r_2}{(S{O_4})_3} + 3{C_2}{H_4}{O_2} + 2{K_2}S{O_4} + 11{H_2}O$$

If the rate of appearance of Cr₂(SO₄)₃ is 2.67 mol min^$$-$$1 at a particular time, the rate of disappearance of C₂H₆O at the same time is _____________ mol min^$$-$$1. (Nearest integer)

The following data was obtained for chemical reaction given below at 975 K.

2NO_(g) + 2H_2(g) $$\to$$ N_2(g) + 2H₂O_(g)



The order of the reaction with respect to NO is ___________. [Integer answer]

For the first order reaction A $$\to$$ 2B, 1 mole of reactant A gives 0.2 moles of B after 100 minutes. The half life of the reaction is __________ min. (Round off to the nearest integer).

[Use : ln 2 = 0.69, ln 10 = 2.3]

Properties of logarithms : ln x^y = y ln x;

$$\ln \left( {{x \over y}} \right) = \ln x - \ln y$$

(Round off to the nearest integer)

For a chemical reaction A $$\to$$ B, it was found that concentration of B is increased by 0.2 mol L^$$-$$ in 30 min. The average rate of the reaction is ____________ $$\times$$ 10^$$-$$1 mol L^$$-$$1 h^$$-$$1. (in nearest integer)