Initial Rate of Reaction

Consider a solution of 0.10 M H$^{+}$ in 0.10 M thioacetimide at 25 $^\circ$C

rate = k[H$^{+}$][CH$_3$CSNH$_2$]

How are the rate and the rate constant (k) effected when water is added to the solution? When the reaction is heated to 75$^\circ$C ? When NaOH is added?

The following initial rate data was collected for the reaction, A + 2B $\longrightarrow$ products

B. Find the rate constant

The following initial rate data was collected for the reaction, 2 NO + O$_2$ $\longrightarrow$ 2NO$_2$

[NO$_2$]$^X$[O$_2$]$^Y$

The following initial rate data was collected for the reaction, CH$_3$Br + OH$^-$ $\longrightarrow$ CH$_3$OH + Br$^-$

B. What is the rate constant?