Ammonia Acid Worksheet With Answers Page 8
ADVERTISEMENT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49Q7.
This item appeared in the Wolverhampton Express and Star on October 31st, 1997.
Read the passage and answer the questions that follow.
Fumes scare at
factory
Workers were forced to flee a
factory after a chemical alert.
The building was evacuated
when a toxic gas filled the
factory.
It happened when nitric acid
spilled on to the floor and mixed
with magnesium metal powder.
(a)
The equation which represents the reaction between magnesium and nitric acid is:
Mg
+ 4HNO
→ Mg(NO
)
+ 2H
O
+ 2NO
(s)
3(aq)
3
2(aq)
2
(1)
2(g)
Give the formula of the toxic gas that was produced.
....................................................................................................................................
(1)
(b)
Explain, in terms of particles, how the toxic gas was able to fill the factory quickly.
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
(2)
(c)
The reaction of nitric acid with magnesium metal powder is more dangerous than if the
acid had fallen on to the same mass of magnesium bars. Explain why.
....................................................................................................................................
....................................................................................................................................
....................................................................................................................................
(1)
(d)
(i)
Water was sprayed on to the magnesium and nitric acid to slow down the reaction.
Explain, in terms of particles, why the reaction would slow down.
..........................................................................................................................
..........................................................................................................................
..........................................................................................................................
(2)
Page 8 of 49
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education