14 The equation for the effect of heat on hydrated sodium carbonate is as shown. Na2CO3. 10H2O(s) → Na2CO3(s) + 10H2O(g)
Statements made by four students about the reaction are given.
P
Anhydrous sodium carbonate is formed.
Steam is formed.
Q
R
There is a colour change from blue to white.
S
The reaction is reversible.
Which students' statements are correct?
A
P, Q and R only
B
P, Q and S only
Q, R and S only
С
D
P Q R and S