Question:
Density of $3\,M$ solution of $NaCl$ is $1.25 \,g/mL$ The mass of the solvent in the solution is
Density of $3\,M$ solution of $NaCl$ is $1.25 \,g/mL$ The mass of the solvent in the solution is
Updated On: Jun 23, 2023
- $1075.4 \,g$
- $10.745 \,g$
- $10.754\, g$
- $1074.5\, g$
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
$d = {1.25\, g/mL}$, conc, of solution = 3 M
= 3 moles in one litre of the solution.
Molar mass of $ {NaCl = 23 + 35.5 = 58.5 \, g \,mol^{-1}}$
Volume of solution= 1 L = 1000 mL
Mass of solution = $d \times V$
= $ {1.25\, g mL^{-1} \times 1000\, mL}$
= 1250 g
Mass of solute (NaCl) = n $\times$ molar mass
= $ { 3 \times 58.5 : 175.5 \,g}$
Mass of solvent
= Mass of solution - mass of solute
= 1250 -175.5 = 1074.5 g
= 3 moles in one litre of the solution.
Molar mass of $ {NaCl = 23 + 35.5 = 58.5 \, g \,mol^{-1}}$
Volume of solution= 1 L = 1000 mL
Mass of solution = $d \times V$
= $ {1.25\, g mL^{-1} \times 1000\, mL}$
= 1250 g
Mass of solute (NaCl) = n $\times$ molar mass
= $ { 3 \times 58.5 : 175.5 \,g}$
Mass of solvent
= Mass of solution - mass of solute
= 1250 -175.5 = 1074.5 g
Was this answer helpful?
0
0
Top Questions on Some basic concepts of chemistry
- A compound X contains 32% of A, 20% of B and remaining percentage of C. Then, the empirical formula of X is:
(Given atomic masses of A=64; B=40; C=32 u)- NEET (UG) - 2024
- Chemistry
- Some basic concepts of chemistry
- Following Kjeldahl's method, 1g of organic compound released ammonia that neutralized 10 mL of 2M H\(_2\)SO\(_4\). The percentage of nitrogen in the compound is _________.%.
- JEE Main - 2024
- Chemistry
- Some basic concepts of chemistry
- Match List I with List II
\(\begin{array}{|c|c|c|} \hline \text{LIST I (Technique)} & & \text{LIST II (Application)} \\ \hline \text{A. Distillation} & & \text{I. Separation of glycerol from spent-lye} \\ \text{B. Fractional distillation} & & \text{II. Aniline - Water mixture} \\ \text{C. Steam distillation} & & \text{III. Separation of crude oil fractions} \\ \text{D. Distillation under reduced pressure} & & \text{IV. Chloroform-Aniline} \\ \hline \end{array}\)
Choose the correct answer from the options given below:- JEE Main - 2024
- Chemistry
- Some basic concepts of chemistry
- The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is -
- JEE Main - 2024
- Chemistry
- Some basic concepts of chemistry
- The technique used for purification of steam volatile water immiscible substance is:
- JEE Main - 2024
- Chemistry
- Some basic concepts of chemistry
View More Questions
Questions Asked in COMEDK UGET exam
- A $2\,kg$ mass lying on a table is displaced in the horizontal direction through $50\,cm$. The work done by the normal reaction will be
- COMEDK UGET - 2015
- work, energy and power
- The numbers of $ {H^+}$ ions present in 1 mL of a solution whose pH is 13
- COMEDK UGET - 2015
- Equilibrium
- A mixture of methylamine and dimethylamine is given to you. The reagents used to separate the components of the mixture are
- $\cot^{-1} (21) + \cot^{-1} (13) + \cot^{-1} (-8) =$
- COMEDK UGET - 2015
- Inverse Trigonometric Functions
- Pick the incorrect statement among those given below.
- COMEDK UGET - 2015
- Chemical bonding and molecular structure
View More Questions
Concepts Used:
Some Basic Concepts of Chemistry
Chemistry is a vast subject and for understanding its significance we can take help of following points:
- Chemistry plays an important role in understanding various subjects like physics, geology and biology.
- Chemistry is a core branch of science that explains us about the various compositional properties and interaction of matter. It also helps to understand various chemical reactions.
- Chemistry is important in order to understand the behaviour of fertilizers, alkenes, acids, salts, dyes, polymers, drugs, soaps and alloys in organic and inorganic chemistry.
- Chemistry plays an important role in various fields like healthcare, industrial, research, food, and farm activities.
Read More: Some Basic Concepts of Chemistry
Classification of Matter
There are two ways of classifying the matter:
(A) Physical Classification:
Matter can exist in three physical states:
- Solids - have definite volume and definite shape
- Liquids - have definite volume but not definite shape.
- Gases - have neither definite volume nor definite shape.
(B) Chemical Classification:
Based upon the composition, matter can be divided into two main types:
- Pure Substances are defined as a single substance (or matter) which cannot be separated by simple physical methods. Pure substances can be further classified as (i) Elements (ii) Compounds
- Mixtures are the combination of two or more elements or compounds which are not chemically combined together and may also be present in any proportion.