Question

3
when
int H Son
Nance the son soused .
the cool and
NAOH ve Separety
dissolved
ke
be
RS​

Answer 1

Explanation:

ANSWER

As we know that,

no. of moles=

Mol. wt.

Wt.

Mol. wt. of NaOH=40g

Wt. of NaOH=2g(Given)

Therefore,

No. of mles =

40

2

=0.05 mol

As we know that molarity of a solution is defined as the no. of moles of solute present in 1L of solution.

Since 0.05 mole of NaOH are pesent in 1L of of solution.

Therefore,

Molarity of solution (M)=0.05

⇒[OH

−

]=0.05

As we know that,

pOH=−log[OH

−

]

⇒pOH=−log(5×10

−2

)

⇒pOH=1.3

Therefore,

pH+pOH=1

⇒pH=14−pOH=14−1.3=12.7

Hence pH of the solution is 12.7.

please mark my answer as the brainliest.

please, please, please.....