02-06-2017
Chemistry

contestada

What is the molarity of NaOH, if 15g of NaOH is mixed with 600mL?

Respuesta :

dec77cat dec77cat

02-06-2017

m(NaOH)=15 g

v=600 ml=0.6 l

n(NaOH)=m(NaOH)/M(NaOH)

C=n(NaOH)/v=m(NaOH)/[M(NaOH)v]

C=15g/[40g/mol*0.6 l]=0.625 mol/l

0.625M

[H⁺]=7.5*10⁻²
pOH=14-pH=14+lg[H⁺]
pOH=14+lg(7.5*10⁻²)=14-1.125=12.875

Answer Link

Otras preguntas

Verbal expression of 15 + r

(6x 7)(6x-7) determine each product

Find the area of a sector with a central angel of 300 degrees and a radius of 14.6 mm. Round to the nearest tenth.

Why did Jews and Christians experience religious tolerance from Muslim leaders

convert 18/24 to a decimal

1) Identify the rhythm of the following lines. From Edgar Allan Poe's "The Raven": "Ah, distinctly I remember it was in the bleak December; And each separate dy

65 sit up each day for one week using distributive property

what is 12.375 in expanded form

Read the sentence. Dale prefers to read books with exciting plots. Which identifies the type of phrase represented by the underlined text? A.appositive phrase B

At the potluck, there were 6 pecan pies, 7 lemon pies, 13 cherry pies, and 8 apple pies. Find the ratio of apple pies to the total number of pies. Write each ra