In an endothermic reaction, if there is a loss in entropy the reaction will
be indeterminate
be spontaneous
not be spontaneous
be at equilibrium
Correct answer is C
No explanation has been provided for this answer.
In an electrochemical cell, polarization is caused by
chlorine
oxygen
tetaoxsulphate (Vl) acid
hydrogen
Correct answer is D
No explanation has been provided for this answer.
2H2O (l) + 2F2(g) → 4HF(aq) + O2(g).
In the reaction above, the substance that is being reduced is
O2(g)
H2O(l)
F2(g)
HF(aq)
Correct answer is C
F(2) + 2e \(\rightarrow\) 2F- x 2
2F2 + 4e \(\rightarrow\) 4F-
An insoluble salt can be prepared by
the reaction of trioxocarbonate (V) with an acid
double decomposition
the action of dilute acid on an insoluble base
the reaction of metals with an acid
Correct answer is B
No explanation has been provided for this answer.
Which of the following substances is not a salt?
Aluminium oxide
Sodium hydrogentrioxosulphate (V)
Sodium trioxocarbonate (V
Zinc chloride
Correct answer is A
No explanation has been provided for this answer.