Question

.1 Complete the statements by filling in the blank with the correct word/s:
1. Direct combination reaction of sulphur dioxide with water gives [H2SO4/H2SO3/H S2021.
2 Formation of hydrogen chloride from hydrogen and chlorine is an example of
[photochemical reaction/electrochemical reaction).
3. The reaction of hydrogen burning in oxygen to give a neutral liquid is an example of
[exothermic/endothermic) reaction.
4. The neutral gas evolved when lead nitrate undergoes thermal decomposition is
(nitrogen dioxide/oxygen/nitrogen).
5. The reddish brown precipitate obtained during a double decomposition - precipitation reaction
between an iron salt and an alkali is
[iron [II] hydroxide/iron [III] hydroxide)​

Answer 1

Answer:

1.H2SO4

2.no idea

r3.endothermic

4. nitrogen dioxide

5. iron 3 hydroxide