A sample of hard water contains some calcium sulphate and...
A sample of hard water contains some calcium sulphate and calcium hydrogen carbonate. The total hardness may therefore be removed by
boiling the water
adding excess calcium hydroxide
adding a calculated amount of calcium hydroxide
adding sodium carbonate
adding magnesium hydroxide
Correct answer is D
No explanation has been provided for this answer.
H\(^+\) + OH\(^-\) → H\(_2\)O The equation above illustrates...
What is the chemical symbol for Sodium? ...
Which of the following compound is a normal salt? ...
In the diagram above the gas Y could be ...
Which of the following reagents will confirm the presence of unsaturation in a compound? ...
According to Charle's law, the volume of a gas becomes zero at ...
Which of the following separation processes is most likely to yield high quality ethanol (>95%) f...