Given :
0.00072 M solution of
at
.
To Find :
The concentration of
and pOH .
Solution :
1 mole of
gives 2 moles of
ions .
So , 0.00072 M mole of
gives :
![[OH^-]=2 \times 0.00072\ M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D2%20%5Ctimes%200.00072%5C%20M)
![[OH^-]=0.00144\ M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D0.00144%5C%20M)
![[OH^-]=1.44\times 10^{-3}\ M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D1.44%5Ctimes%2010%5E%7B-3%7D%5C%20M)
Now , pOH is given by :
![pOH=-log[OH^-]\\\\pOH=-log[1.44\times 10^{-3}]\\\\pOH=2.84](https://tex.z-dn.net/?f=pOH%3D-log%5BOH%5E-%5D%5C%5C%5C%5CpOH%3D-log%5B1.44%5Ctimes%2010%5E%7B-3%7D%5D%5C%5C%5C%5CpOH%3D2.84)
Hence , this is the required solution .
Correct, it is a start of a experiment, something that is asked first.
Temperature of the same cup of water will rise by 6 °C unless it boils.
<h3>Explanation</h3>
.
However, neither
nor
is given.
Adding
to this cup of water of mass
rises its temperature by
.
In other words,

.
Both
and
are constant for the same cup of water unless the water boils. It's possible to reuse the value of
in the second calculation. Here's how:
.
The flow rate of water differs from honey due to the texture and thickness of the product. Honey’s thickness doesn’t allow it to move as quickly as the water, therefore affecting the flow rate.
When a liquid is frozen, the atoms in the liquid slow their movement due to lack of energy so the substance becomes hard.