Question

Find the magnitude of the rate (M/s) of disappearance for H⁺ in the reaction below if the rate of appearance of Br₂ is 0.0219 M/s:

$5 Br^- (aq) + BrO_3^-(aq) + 6 H^+ (aq) \rightarrow 3 Br_2 (aq) + 3 H_2O(l)$

Question 7.

Given the following reaction and the table of rate data, find the Rate when the [NO] = 0.75 M and [Cl₂] = 1.25 M.

Hint: first determine orders and then the rate constant (k) for this reaction again.

$2 NO (g) + Cl_2 (g) \rightarrow 2 NOCl (g)$

Rate Data

[NO] (M)	[Cl2] (M)	Rate (M/h)
0.50	0.50	1.14
0.25	0.50	0.29
0.50	1.00	1.15

Question 11.

What is the concentration of reactant [A] at t = 3.6 s if A is 0th order, k = 0.00571 M s^-1, and the initial concentration of [A] = 0.951 M?

Answer 1

Jiven So0(ae) + Br 03 (a) t G (4)3 6,() +3h,0la) Yate law for this reacion CBTo3 A CHt ACB, 6 t ATBT.. Af ve Sign, it meansdisappearanre of reactnts t means +ve sign, appesrance of Produ cts Siven AT BYJ O.0215 MIg From Tate lq, C6T Lxo.0219 6 At Lx6X 0 0219 M/s 3 A CHJ 4f O.g436 M/S Magnitad e of the rate dlisappearance for t o.0438M/s (Ans)

Siveh, 2NO (3)+ ch(9 deg) Nod (3) Tate 1qw for this reachon T2KINOJ Cj for cose-r (o-50) (0-50) K 1-14 for cose-D, o.21k (o.25) (0-50) For case- 115 (05) (00 shviteng e Ole k(050 (050)9 k (0 25) (05 119 O29 (2)t 4 k (0.50) 0.50)) k(o-s0) (100) 114 IS 1 ( ()

Put the Valve of xand y in equaion k (0.50(0.50 1-14 119 k (6.50)2 4.56 M-b CA 14 Tak canstent Tate (qw of reachon k [No OYder of the reachon = Ordes of reacHon with mspecto to No the reachon +order df with respectto c てty given, ENOJ = 0-75M, ECl, = 125 2 4-56972 (0-15m) TKENOJ = 2.5tM/h CAm)