(e) Table 1 shows the solubility of three solids in water at room temperature.
Table 1
Solid
The mass of the solid that
dissolves in 100 cm3 of
water
Phosphorus oxide
50 g
Silicon dioxide
og
Sodium hydroxide
100 g
A teacher labelled these three solids A, B and C.
She gave a student the information shown in Table 2
Table 2
Solid
Observation when added to water
pH of the solid in water
А
colourless solution
14
B
colourless solution
2
с
solid does not dissolve
7
Describe a method that could be used to identify each of the three solids A, B and C.
You must use an indicator in the method.
Use information in Table 1 and Table 2
(4)
(Total 9 marks)