KiboOkamiidn
Answered

Join IDNLearn.com and start getting the answers you've been searching for. Get prompt and accurate answers to your questions from our community of experts who are always ready to help.

9. What is the total number of grams of NaOH (formula mass = 40.) needed to make 1.0 liter of a 0.20 M solution?

(1) 20. g (2) 2.0 g (3) 80. g (4) 8.0 g​

Sagot :

Bhandarinitesh200idn

Answer:

8 gram

Explanation:

in case of NaOH, normality=molarity

so normality=molarity×acidity or basicity(in case of NaOH it's 1)

then

weight of NaOH required = volume in ml × equivalent weight × normality / 1000

so

1000× 40× 0.2/1000

=8 gram

Eduard22slyidn

The total mass of sodium hydroxide (NaOH) needed to make the solution is 8 g (Option 4)

How to determine the mole of NaOH

  • Volume = 1 L
  • Molarity = 0.2 M
  • Mole of NaOH =?

Molarity = mole / Volume

0.2 = mole of NaOH / 1

Mole of NaOH = 0.2 mole

How to determine the mass of NaOH

  • Mole of NaOH = 0.2 mole
  • Molar mass of NaOH = 40 g/mol
  • Mass of NaOH =?

Mass = mole × molar mass

Mass of NaOH = 0.2 × 40

Mass of NaOH = 8 g

Learn more about molarity:

https://brainly.com/question/15370276

We are happy to have you as part of our community. Keep asking, answering, and sharing your insights. Together, we can create a valuable knowledge resource. IDNLearn.com is your reliable source for accurate answers. Thank you for visiting, and we hope to assist you again.