For the reaction: N2(g) + O2(g) 2NO(g), the Keq at 2130°C is 0.0025. If [N2] = 0.75 M, [O2] = 0.30 M, and [NO] = 0.090 M, calculate Q and in which direction will the reaction shift? A.
3.6 × 10-2; shift to right
B.
3.6 × 10-2; shift to left
C.
4.0 × 10-1; shift to right
D.
4.0 × 10-1; shift to left

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Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m