Get 2 FREE Instant-Explanations on Filo with code FILOAPP

Home

The density of {3}{M} sodium of thiosulphate solution {({N}{a}

Question

The density of $3 M$ sodium of thiosulphate solution $(N a_{2} S_{2} O_{3})$ is $1.25 g m L^{- 1}$ . Calculate
a. The precentage by weight of sodium thiosulphate.
b. The mole fraction of sodium thiosulphate.
c. The molalities of $N a^{\oplus}$ and $S_{2} O_{3}^{2 -}$ ions.

Views: 773 students

Found 4 tutors discussing this question

William Discussed

The density of

3 M

sodium of thiosulphate solution

(N a_{2} S_{2} O_{3})

1.25 g m L^{- 1}

. Calculate
a. The precentage by weight of sodium thiosulphate.
b. The mole fraction of sodium thiosulphate.
c. The molalities of

N a^{\oplus}

and

S_{2} O_{3}^{2 -}

ions.

15 mins ago

Discuss this question LIVE

15 mins ago

Text solutionVerified

Answer: (i)

37.92

, (ii)

0.065

, (iii)

7.73 m

Solution: Let us consider

1.0 L

solution for all the calculation.
(i) Weight of

1 L

solution

= 1250 g

Weight of

N a_{2} S_{2} O_{3} = 3 \times 158 = 474 g

\Rightarrow

Weight percentage of

N a_{2} S_{2} O_{3} = \frac{474}{1250} \times 100 = 37.92

(ii) Weight of

H_{2} O

1 L

solution

= 1250 - 474 = 776 g

Mole fraction of

N a_{2} S_{2} O_{3} = \frac{3}{3 + \frac{776}{18}} = 0.065

(iii) Molarity of

N a^{+} = \frac{3 \times 2}{776} \times 100 = 7.73 m

Was this solution helpful?

150

Report

One destination for complete JEE/NEET preparation

One destination to cover all your homework and assignment needs

Learn Practice Revision Succeed

Instant 1:1 help, 24x7

60, 000+ Expert tutors

Textbook solutions

Big idea maths, McGraw-Hill Education etc

Essay review

Get expert feedback on your essay

Schedule classes

High dosage tutoring from Dedicated 3 experts

Trusted by 4 million+ students

Stuck on the question or explanation?

Connect with our chemistry tutors online and get step by step solution of this question.

231 students are taking LIVE classes

Question Text	The density of $3 M$ sodium of thiosulphate solution $(N a_{2} S_{2} O_{3})$ is $1.25 g m L^{- 1}$ . Calculate a. The precentage by weight of sodium thiosulphate. b. The mole fraction of sodium thiosulphate. c. The molalities of $N a^{\oplus}$ and $S_{2} O_{3}^{2 -}$ ions.
Answer Type	Text solution:1
Upvotes	150

The density of 3M sodium of thiosulphate solution (Na2​S2​O3​) is 1.25gmL−1. Calculate a. The precentage by weight of sodium thiosulphate. b. The mole fraction of sodium thiosulphate. c. The molalities of Na⊕ and S2​O32−​ ions.

Text solutionVerified

Practice questions from similar books

The density of $3 M$ sodium of thiosulphate solution $(N a_{2} S_{2} O_{3})$ is $1.25 g m L^{- 1}$ . Calculate
a. The precentage by weight of sodium thiosulphate.
b. The mole fraction of sodium thiosulphate.
c. The molalities of $N a^{\oplus}$ and $S_{2} O_{3}^{2 -}$ ions.