The active mass of 80g NaOh in 8 litre flask is? a) 1.0. B) 0.75 c) 0.5 d) 0.25

Question

Cheesestick

Chemistry

25 July, 00:41

The active mass of 80g NaOh in 8 litre flask is? a) 1.0. B) 0.75 c) 0.5 d) 0.25

+2

Answers (2)

Know the Answer?

Ryleigh Howard · Answer 1

0.75 is Option B answer I am sure

Jaycee Higgins · Answer 2

Option d) 0.25

Explanation:

Molar Mass of NaOH = 23 + 16 + 1 = 40g/mol

Mass of NaOH from the question = 80g

Number of mole = Mass/Molar Mass

Number of mole of NaOH = 80/40 = 2moles

Volume = 8L

Active mass = mole / Volume

Active mass = 2moles/8L

Active mass = 0.25mol/L