Answered: 3. Molality How many grams of solute is…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Concept explainers

Question

2 MOLARITY ONLY

$D. condensation of A. boiling of water B. melting of ice C. evaporation of alcohol water vapour 8. An aqueous solution becomes cold when a solid is dissolved in the water. What does the decrease in temperature imply? C. the process is exothermic B. the solid releases heat 9. Hess's Law states that a chemical reaction is independent of the routeby which chemical reactions takes place while keeping the same A. initial and final conditions C. initial conditions only D. mid-conditions B. final conditions only 10. The change in the energy between a chemical reaction and the surroundings at constant temperature is called C. enthalpy profile D. dynamic enthalpy A. enthalpy B. enthalpy change PROBLEM SOLVING Directions: Solve each of the following problem. Show your complete solutions. 1. Mole Fraction Calculate the mole fraction of hydrochloric acid (HCI) in 70% (wt/wt) aqueous HCl solution (molar masses: HCl The mole Fr action oF HCI is given by: The no. of moles of HCI The no. OF moles OF HCI= ].9204 mol moles OF HCI = ).9204 mol = 36.45 g/mol, H2O = 18 g/mol) %3D mole Fraction OF HCI= mole of HU+ mole of H20 mole Fraction is mole Fractionf HCI is= 1.92043.58701 mole praction of HCI is = 0.535 37 mole mole Fraction %3D つH to The no. OF 1. 592041.9204 t 1.66667 The no. oF moles OF H20 is= 30 gl8g/mol The no. OF moles of H2o is 1.66667 mol Fraction is - O:54 2. Molarity Mole praction oF HCI = 0.54 Calculate the molar concentration of a solution that contains 23 g of sodium hydroxide. NaOH in 250 ml of solution. Molar mass of NaOH is 40.01 g/mol. 3. Molality How many grams of solute is present in 2.5 moles Magnesium hydroxide, Mg(OH)2 in 669 g water, H2O? The molar mass of Mg(OH)2 is 58 g/mol. 4. Percent by Mass/Volume Concentration A 50 ml of 12% by mass per volume solution was used in an experiment. How many grams of solute does the solution contain?$

Transcribed Image Text:D. condensation of A. boiling of water B. melting of ice C. evaporation of alcohol water vapour 8. An aqueous solution becomes cold when a solid is dissolved in the water. What does the decrease in temperature imply? C. the process is exothermic B. the solid releases heat 9. Hess's Law states that a chemical reaction is independent of the routeby which chemical reactions takes place while keeping the same A. initial and final conditions C. initial conditions only D. mid-conditions B. final conditions only 10. The change in the energy between a chemical reaction and the surroundings at constant temperature is called C. enthalpy profile D. dynamic enthalpy A. enthalpy B. enthalpy change PROBLEM SOLVING Directions: Solve each of the following problem. Show your complete solutions. 1. Mole Fraction Calculate the mole fraction of hydrochloric acid (HCI) in 70% (wt/wt) aqueous HCl solution (molar masses: HCl The mole Fr action oF HCI is given by: The no. of moles of HCI The no. OF moles OF HCI= ].9204 mol moles OF HCI = ).9204 mol = 36.45 g/mol, H2O = 18 g/mol) %3D mole Fraction OF HCI= mole of HU+ mole of H20 mole Fraction is mole Fractionf HCI is= 1.92043.58701 mole praction of HCI is = 0.535 37 mole mole Fraction %3D つH to The no. OF 1. 592041.9204 t 1.66667 The no. oF moles OF H20 is= 30 gl8g/mol The no. OF moles of H2o is 1.66667 mol Fraction is - O:54 2. Molarity Mole praction oF HCI = 0.54 Calculate the molar concentration of a solution that contains 23 g of sodium hydroxide. NaOH in 250 ml of solution. Molar mass of NaOH is 40.01 g/mol. 3. Molality How many grams of solute is present in 2.5 moles Magnesium hydroxide, Mg(OH)2 in 669 g water, H2O? The molar mass of Mg(OH)2 is 58 g/mol. 4. Percent by Mass/Volume Concentration A 50 ml of 12% by mass per volume solution was used in an experiment. How many grams of solute does the solution contain?

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions