When CO2 is bubbled into an aqueous solution of Na2CO3, the following is formed
H2O
OH-
NaHCO3
NaOH
The _____________ in the rate of reaction with rise in temperature is usually expressed in terms of a quantity known as temperature coefficient.
Decreases
Increases.
May be increases or decreases
Constant.
Which of the following will liberals hydrogen by its reaction with HCl?
Cu
P
Hg
Mg
Ca, Sr and Ba dissolves in liquid ammonia giving a
Highly non - conducting
Highly non - reducing
Diamagnetic
Deep blue in colour
The atomic numbers of four elements are given below. Which is an alkaline earth metal?
10
20
30
40
