Question

two binary solutions have the same molaritywhich one of the following is true ​

Answer 1

Answer:

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Answer 2

The whole question is as follows:

Two binary solutions have the same molarity. Which of the following statements is true?

(a) Equal volumes of the two solutions contain an equal number of solute molecules.

(b) Equal weights of the two solutions contain an equal number of solute molecules.

(c) The two solutions, must have the same molality.

(d) The two solutions must have the same mole fraction.

Answer:

Statement (a) "Equal volumes of the two solutions contain an equal number of solute molecules" is correct.

Explanation:

What is the binary solution?

• A binary solution is a homogeneous mixture of two liquids which are completely miscible with each other.
• Examples of such solutions are: 1. water + salt and 2. sugar + water.

Molarity = w / M × V

where,

• w = weight of solute in grams
• M = molecular weight of solute
• V = volume of solution in litres

If the molarity is the same then,

w1 /M1 × V1 = w2 / M2 × V2

If V1 = V2 then,

w1/ M1 = w2/ M2

So, we can say that equal volumes of the two solutions contain an equal number of solute molecules.

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