Ammonium nitrite, #NH_4NO_2# decomposes in solution according to the reaction: #NH_4NO_2(aq)# #rarr# #N_2(g)# + #2H_2O(l)# The concentration of #NH_4^+# ion at the beginning of an experiment was 0.5 M. After 3 hrs, it was 0.432 M (Q below?)
What is the average rate of decomposition of #NH_4NO_2# in this time interval? Thank you so much!
What is the average rate of decomposition of
1 Answer
I got
Given the decomposition
#NH_4NO_2(aq)# #rarr# #N_2(g)# +#2H_2O(l)# ,
if the initial concentration of
#(Delta["NH"_4"NO"_2])/(Deltat) = ?#
Since we only want the average, we can ignore the fact that the concentration decreases in a curved manner. We have for
#(Delta["NH"_4^(+)])/(Deltat) = (0.432 - 0.5)/(3 - 0) "M"/"hr" = -2.27 xx 10^(-2) "M/hr"#
But we know that for every one
#color(blue)((Delta["NH"_4"NO"_2])/(Deltat) = (Delta["NH"_4^(+)])/(Deltat) = -2.27 xx 10^(-2) "M/hr")#