For the reaction A(g) → B(g) + 4 C(g), what is the rate of pressure change for C if the pressure change for A is -0.105 atm/s?

Answer 1

The rate of change for C will be 4x that of A (see stoichiometric coefficients).

Rate of pressure change for C = +4 x 0.105 atm/s = 0.420 atm/s