Question

Read the following and tower my four guestions from 2 to 20
The following graphs shows the stone of hydrogen esillected in four different
apaimen haa. ipdrocitories is an eraalam tine, ope,
மye direment
wodujo un
Grapt 1
Grah 2
Graphs 3
Graph 4
Same the graph that produces hydrogen gas faster
(Grays)
) Geagte 2
Graph 3
d) Graps 4
GO) Name the metal used in experiment fat gave the result for graph 4.
(a) Mg
b) Za
Fe
a) Ways to speed up the slow reaction are
1. heating the reactants
2. cooling the reactants
B.asing more aituredrid
4. using more concentrated acid
ka) I only
b) 1 and 4
II and 3
d) 2 and 4
(iv) The amount of zinc metal used for the above reaction is same but the
concentration of acid is changed, what would be the effect on the rate of
reaction?
a) no change
(b) the speed will increase
c) the speed will decrease
d) the information is incomplete

Answer 1

Explanation:

4. using more concentrated acid

ka) I only

b) 1 and 4

II and 3

d) 2 and 4

(iv) The amount of zinc metal used for the above reaction is same but the

concentration of acid is changed, what would be the effect on the rate of

reaction?

a) no change

(b) the speed will increase

c) the speed will decrease

d) the information is incomplete