Question

Consider the reaction $2S\left(g\right)\to 3B\left(g\right)+C\left(g\right)$. Starting with pure A initially, the total pressure doubled in 3 hrs. The order of the reaction might possibly be?

• A. zero
• B. first
• C. second
• D. unpredictable from this data

Answer 1

Answer: (A)

zero

Its a zero order reaction

$A\to product$

$Ratelaw=k[A{]}^0$

A zero oredr reaction is the one which the rate is proportional to the zeroth power of the concentration.

The total pressure will not affect the pressure of the gas on the surface cannot change by increasing the pressure