Part 8 Solutions

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Part 8 Solutions Properties of Water Solutions LecturePLUS Timberlake

Predict the % water in the accompanying sustenances LecturePLUS Timberlake

Predict the % water in the accompanying nourishments 88% water 94% water 85% water 86% water LecturePLUS Timberlake

Water in the Body water gain water misfortune liquids 1000 mL urine 1500 mL sustenance 1200 mL perspiring 300 mL cells 300 mL exhaling 600 mL feces 100 mL Calculate the aggregate water pick up and water misfortune Total ______ mL _____ mL LecturePLUS Timberlake

Water Most regular dissolvable A polar atom O  - a hydrogen bond H  + H  + LecturePLUS Timberlake

Hydrogen Bonds Attract Polar Water Molecules LecturePLUS Timberlake

Explore: Surface Tension Fill a glass to the overflow with water what number pennies would you be able to add to the glass without bringing on any water to keep running over? Anticipate _________________ Actual _________________ Explain your outcomes LecturePLUS Timberlake

Explore 1. Put some water on a waxy surface. Why do drops frame? 2. Painstakingly put a needle on the surface of water. Why does it coast? What happens on the off chance that you push it through the water surface? 3. Sprinkle pepper on water. What does it do? Include a drop of cleanser. What happens? LecturePLUS Timberlake

Surface Tension Water particles inside water hydrogen security every which way Water atoms at surface can't hydrogen security over the surface, pulled internal Water surface carries on like a thin, flexible layer or "skin" Surfactants (cleansers) fix hydrogen holding LecturePLUS Timberlake

Solute and Solvent Solutions are homogeneous blends of at least two substances Solute The substance in the lesser sum Solvent The substance in the more noteworthy sum LecturePLUS Timberlake

Nature of Solutes in Solutions Spread equitably all through the arrangement Cannot be isolated by filtration Can be isolated by dissipation Not obvious, arrangement seems straightforward May give a shading to the arrangement LecturePLUS Timberlake

Types of Solutions air O 2 gas and N 2 gas/gas pop CO 2 gas in water gas/fluid seawater NaCl in water strong/fluid metal copper and zinc strong/strong LecturePLUS Timberlake

Discussion Give cases of a few arrangements and clarify why they are arrangements. LecturePLUS Timberlake

Learning Check SF1 (1) component (2) compound (3) arrangement A. water 1 2 3 B. sugar 1 2 3 C. salt water 1 2 3 D. air 1 2 3 E. tea 1 2 3 LecturePLUS Timberlake

Solution SF1 (1) component (2) compound (3) arrangement A. water 2 B. sugar 2 C. salt water 3 D. air 3 E. tea 3 LecturePLUS Timberlake

Learning Check SF2 Identify the solute and the dissolvable. A. metal: 20 g zinc + 50 g copper solute = 1) zinc 2) copper solvent = 1) zinc 2) copper B. 100 g H 2 O + 5 g KCl solute = 1) KCl 2) H 2 O solvent = 1) KCl 2) H 2 O LecturePLUS Timberlake

Solution SF2 A. metal: 20 g zinc + 50 g copper solute = 1) zinc solvent = 2) copper B. 100 g H 2 O + 5 g KCl solute = 1) KCl solvent = 2) H 2 O LecturePLUS Timberlake

Learning Check SF3 Identify the solute in each of the accompanying arrangements: A. 2 g sugar (1) + 100 mL water (2) B. 60.0 mL ethyl liquor (1) and 30.0 mL of methyl liquor (2) C. 55.0 mL water (1) and 1.50 g NaCl (2) D. Air: 200 mL O 2 (1) + 800 mL N (2) LecturePLUS Timberlake

Solution SF3 Identify the solute in each of the accompanying arrangements: A. 2 g sugar (1) B. 30.0 mL of methyl liquor (2) C. 50 g NaCl (2) D. 200 mL O 2 (1) LecturePLUS Timberlake

Like breaks down like A ____________ dissolvable, for example, water is expected to disintegrate polar solutes, for example, sugar and ionic solutes, for example, NaCl. A ___________solvent, for example, hexane (C 6 H 14 ) is expected to break down nonpolar solutes, for example, oil or oil. LecturePLUS Timberlake

Learning Check SF4 Which of the accompanying solutes will disintegrate in water? Why? 1) Na 2 SO 4 2) gas 3) I 2 4) HCl LecturePLUS Timberlake

Solution SF4 Which of the accompanying solutes will break down in water? Why? 1) Na 2 SO 4 Yes, polar (ionic) 2) gas No, nonnpolar 3) I 2 No, nonpolar 4) HCl Yes, Polar LecturePLUS Timberlake

Formation of a Solution H 2 O Hydration Na + Cl - Na + Dissolved solute Cl - H 2 O Na + Cl - solute LecturePLUS Timberlake

Writing An Equation for a Solution When NaCl(s) disintegrates in water, the response can be composed as H 2 O NaCl(s) Na + (aq) + Cl - (aq) strong partition of particles in water LecturePLUS Timberlake

Learning Check SF5 Solid LiCl is added to some water. It breaks down on the grounds that A. The Li + particles are pulled in to the 1) oxygen iota( -) of water 2) hydrogen molecule( +) of water B. The Cl - particles are pulled in to the 1) oxygen molecule( -) of water 2) hydrogen iota( +) of water LecturePLUS Timberlake

Solution SF5 Solid LiCl is added to some water. It breaks up on the grounds that A. The Li + particles are pulled in to the 1) oxygen molecule( -) of water B. The Cl - particles are pulled in to the 2) hydrogen iota( +) of water LecturePLUS Timberlake

Rate of Solution You are making a chicken soup utilizing a bouillon solid shape. What are a few things you can do to make it disintegrate quicker? Squash it Use boiling point water (increment temperature) Stir it LecturePLUS Timberlake

Learning Check SF6 You have to break down some gelatin in water. Demonstrate the impact of each of the accompanying on the rate at which the gelatin disintegrates as (1) increment, (2) diminish, (3) no change A. ___Heating the water B. ___Using extensive bits of gelatin C. ___Stirring the arrangement LecturePLUS Timberlake

Learning Check SF6 You have to break down some gelatin in water. Demonstrate the impact of each of the accompanying on the rate at which the gelatin breaks up as (1) increment, (2) diminish, (3) no change A. 1 Heating the water B. 2 Using substantial bits of gelatin C. 2 Stirring the arrangement LecturePLUS Timberlake