Calcium chloride aqueous solution

Asked by maham237 @ 20/02/2021 in Chemistry viewed by 321 People

The molality of calcium chloride (CaCl2) in an aqueous solution is 2.46 m. What is mole fraction of the solute?

Answered by maham237 @ 20/02/2021

Given that CaCl2 = 2.46 m

Therefore 2.46 mole of CaCl2 present in 1.00 g of solution

Mass of 2.46 mole CaCl2= number of mole * molar mass

= 2.46 mole * 110.98 g/mol

= 273.01 g

Mass of water or solvent = mass of solution – mass of solute

= 1000 g -273.01 g

= 726.99 g

Mole of water = amount in g / molar mass

= 726.99 g/18.02 g/ mole

= 40.34 moles

Mole fraction of CaCl2 = number of mole of CaCl2 / total moles

= 2.46 /2.46+40.34

= 2.46/42.8

= 0.057

In an aqueous solution of potassium chloride the solute is

Asked by admin @ 07/10/2021 in Chemistry viewed by 326 persons

In an aqueous solution of potassium chloride, the solute is * 1. KCI 2. O H20 3. K 4. CI

Heating an aqueous solution of aluminium chloride to dryness

Asked by admin @ 17/08/2021 in Chemistry viewed by 371 persons

Heating an aqueous solution of aluminium chloride to dryness will give (a) Al(OH)Cl₂ (b) Al₂O₃ (c) Al₂Cl₆ (d) AlCl₃

An aqueous solution containing 12.48 g of barium chloride

Asked by admin @ 23/08/2021 in Chemistry viewed by 328 persons

An aqueous solution containing 12.48g of barium chloride in 1.0 kg of water boils at 373.0832 K. calculate the degree of dissociation of barium chloride. (given, Kb for H2O=0.52 Kmolâ …

Chromium metal is immersed in an aqueous solution of cobalt(ii) chloride.

Asked by maham237 @ 23/12/2020 in Chemistry viewed by 1320 persons

Express your answer as a chemical equation. Identify all of the phases in your answer. Enter noreaction if no reaction occurs.

Predict the precipitate that forms when aqueous solutions of silver nitrate and potassium chloride

Asked by maham237 @ 18/12/2020 in Chemistry viewed by 350 persons

react to form products in a double-replacement reaction. Include a discussion of how to write the complete chemical equation describing this reaction. 2. A 500-g sample of Al2(SO4)3 is reacted …

What is the difference between rock salt and calcium chloride

Asked by admin @ 04/11/2021 in Chemistry viewed by 266 persons

Why is calcium chloride (rock salt, CaCl2) more effective than sodium chloride (table salt, NaCl) at de-icing roads in the winter? A. Calcium chloride only breaks into 2 ions, while …

A 10g sample of a mixture of calcium chloride

Asked by admin @ 17/08/2021 in Chemistry viewed by 268 persons

A 10g sample of a mixture of calcium chloride and nacl

How is chloride of lime different from calcium chloride

Asked by admin @ 17/08/2021 in Chemistry viewed by 305 persons

How chlorine of lime is chemically different from calcium chloride

What is the purpose of anhydrous calcium chloride in rusting

Asked by admin @ 03/08/2021 in Chemistry viewed by 295 persons

Why do we use anhydrous calcium chloride in the activity of rusting of iron?

Dot diagram for calcium chloride

Asked by maham237 @ 07/01/2021 in Chemistry viewed by 294 persons

5. (a) Write electron dot diagram for chlorine and 3 po calcium .Show the formation of calcium chloride by transfer of electrons.(b) Identify the nature of above compound and explain …

The vapour pressure of an aqueous solution of sucrose

Asked by admin @ 20/08/2021 in Chemistry viewed by 495 persons

The vapour pressure of an aqueous solution of sucrose at 373k is found to be 750mm hg. the molality at same temperature is

The temperature at which 10 aqueous solution of glucose

Asked by admin @ 17/08/2021 in Chemistry viewed by 398 persons

The temperature at which 10% aqueous solution (w/v) of glucose will exhibit the osmotic pressure of 16.4 atm, is(R=0.082 dm' atm K-moll)(b) 180 K (c) 90 K(d) …