Building block of all matter is whatplease help
2 answers:
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Answer:
in 3 mole of
Explanation:
It is clear that in the given of
have
of
Therefore 3 moles of will have
of
Since 1 ion of anything is equivalent to
Therefore 3 moles of will have
of
Which is equivalent to
Thus 3 moles of gives
of
.
Answer:
The pH is equal to 4.41
Explanation:
Since HClO is a weak acid, its dissociation in aqueous medium is:
HClO ⇄ ClO- + H+
start: 0.05 0 0
change -x +x +x
balance 0.05-x x x
As it is a weak acid it dissociates very little, in its ClO- and H + ions, so the change is negative, where x is a degree of dissociation.
the acidity constant when equilibrium is reached is equal to:
The 0.05-x fraction can be approximated to 0.05, because the ionized fraction (x) is very small, therefore we have:
clearing the x and calculating its value we have:
the pH can be calculated by: