if the molarity is 1 M the the density of naoh is 1.25 find molality
Share
if the molarity is 1 M the the density of naoh is 1.25 find molality
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
in this question 1M solution of NaNO
3
,
By definition if Molarity we know that it is the no. of moles present in per litre of solution. = 1M molar solution has 1 mole of NaNO
3
for 1000ml of solution.
Therefore, mass of solute is mass of 1 mole of NaNO
3
= 23+14+48 = 85 gm.
volume of solution = 1000 ml as per definition.
Now,Given that density is 1.25 g/cm3
Therefore, mass = 1.25×1000 (m = density X volume)
=> mass = 1250 gm (solution mass)
Mass of solvent = mass of solution - mass of solute
= 1250 - 85= 1165gm.
Molarity is the no. of mole of solute per kg of solvent
=> m =
1165
1
×1000 =
1165
1000
=0.85m
Explanation:
⭐Hope it helps you
⭐Please mark me as brainlist
⭐Thanks my answers
⭐60 ♥️ thanks =follow
⭐180 ♥️ thanks = inbox