hydrogen ions are in greater concentration than sodium ions.
hydrogen is higher than sodium in the electrochemical series.
hydrogen is lower than sodium in the electrochemical series.
of the nature of the electrodes.
the concentration of sodium ions is greater than that of the hydrogen ion in the electrolyte.
Correct answer is C
No explanation has been provided for this answer.
Which of these is NOT a physical property f water?
Can be used to dissolve organic substances
Has a boiling point of 100 ° C
Has a density of 19cm3 at 40 °C
Has a freezing point of 0 ° C
is neutral to litmus
Correct answer is A
No explanation has been provided for this answer.
The following gases are diatomic EXCEPT
Fluorine
Helium
Hydrogen
Nitrogen
Oxygen
Correct answer is B
No explanation has been provided for this answer.
The reaction of hydrochloric acid and calcium trioxocarbonate (IV) produces
calcium chloride, carbon (IV) oxide and water
calcium chloride, and trioxocarbonate (IV) acid
calcium hydroxide, carbon (IV) oxide and chlorine gas
calcium hydroxide, carbon (IV) oxide and water
calcium metal and water.
Correct answer is A
No explanation has been provided for this answer.