What is the molarity of a 500 mL of solution made from 80g of NaOH and water?

Question

What is the molarity of a 500 mL of solution made from 80g of NaOH and water?

in progress 0
Tryphena 4 years 2021-09-02T17:12:35+00:00 1 Answers 2 views 0

Answers ( )

  1. Gerda
    0
    2021-09-02T17:13:41+00:00
    Reply

    Answer:

    Molarity= Moles of solute/Volume of solution(in litres)

    Solute:NaOH

    Moles =mass/Molar Mass

    Molar mass of NaOH= 22.9+16+1=39.9g/mol

    Substituting

    m=80/39.9

    =2.0moles

    Volume has to be in litres

    There’s 1000ml to a litre

    So 500ml equals 0.5litres

    Molarity = 2/0.5

    = 4M.

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )