Homework Answers
Substances which conduct electric Current in aqueous or molten state are known as electrolytes.
All acids , bases and salts are electrolytes.
Ionic compounds when dissolved in water , dissociate into it's respective ions and conduct electric Current. Hence ionic compounds are electrolytes.
KCl when dissolved in water forms K+ and Cl- ions , hence it can conduct electric Current.
KCl is an electrolyte.
Answer -- KCl
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2. Which compound forms an electrolyte solution when dissolved in water? a. KCI b. Br2 C....
When 0.60 grams of a non-electrolyte unknown compound is dissolved in 10 grams of water, the...
When 0.60 grams of a non-electrolyte unknown compound is dissolved in 10 grams of water, the freezing point of the solution is -1.86o C. Given that the freezing point of pure water is 0o C and that the freezing-point depression constant for water is 1.86 o C/mol/kg, calculate the molecular mass (g/mol) of the unknown compound.
A solute that conducts electricity when dissolved in water. a. colligative property b. electrolyte c....
A solute that conducts electricity when dissolved in water. a. colligative property b. electrolyte c. endothermic d. exothermic e. osmosis f. saturated solution g. solute h. solution i. solvent j. supersaturated solution A process where heat is released. a. colligative property b. electrolyte c. endothermic d. exothermic e. osmosis f. saturated solution g. solute h. solution i. solvent j. supersaturated solution
1.Which compound is the most soluble in water? A. CH3CH2CH2CH2CH2OH B. CH3CH2CH2CH2OH C. CH3CH2CH2CH2CH2CH2CH2OH D. CH3CH2CH2OH...
1.Which compound is the most soluble in water?
A. CH3CH2CH2CH2CH2OH B. CH3CH2CH2CH2OH
C. CH3CH2CH2CH2CH2CH2CH2OH D. CH3CH2CH2OH
E. All of these compounds are equally soluble in water.
2. Which of these compounds is a strong electrolyte?
A. H2O B. O2 C. H2SO4 D. C6H12O6 (glucose) E. CH3COOH (acetic
acid)
3. Hexachlorophene is used as a disinfectant in germicidal
soaps. What mass of hexachlorophene (406.9 g/mol) must be added to
125 g of chloroform to give a solution with a boiling point...
A solution contains 10.35 g of unknown compound (non-electrolyte) dissolved in 50.0 mL of water. (Assume...
A solution contains 10.35 g of unknown compound (non-electrolyte) dissolved in 50.0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -3.26 ∘C. The mass percent composition of the compound is 60.98% C, 11.94% H, and the rest is O. What is the molecular formula of the compound?
Which of the following compounds would you expect to create a strong electrolyte solution when dissolved in water? а. С...
Which of the following compounds would you expect to create a
strong electrolyte solution when dissolved in water?
а. СН206 b. SO2 с. ССЦ d. KCl е. F2
Which salt forms a basic solution when dissolved in water? ОА) КСІ OB) LINO3 C) Na3PO4...
Which salt forms a basic solution when dissolved in water? ОА) КСІ OB) LINO3 C) Na3PO4 UD) NH Br
Which of the following will produce a basic solution when dissolved in water? CH_3OH CH_3NH_2 CH_3COOH...
Which of the following will produce a basic solution when dissolved in water? CH_3OH CH_3NH_2 CH_3COOH both A and B all of them Which of the following alcohol, do you expect to be the least water soluble? CH_3-OH CH_3CH_2-OH HO-CH_2CH_2CH_2-OH CH_3CH_2CH_2CH_2CH_2-OH Do the following two structures represent:
2. A colorless crystalline compound when dissolved in water formed a colorless solution . This compound...
2. A colorless crystalline compound when dissolved in water formed a colorless solution . This compound was heated in a clean, dry test tube. This heating produced several drop- lets of water on the upper region of the test tube. The residue was dissolved in water and formed a yellow-brown solution. a. Determine if this colorless crystalline compound is a true hydrate or not. b. Give reasons.
A solution contains 11.70 g of unknown compound (non-electrolyte) dissolved in 50.0 mL of water. (Assume...
A solution contains 11.70 g of unknown compound (non-electrolyte) dissolved in 50.0 mL of water. (Assume a density of 1.00 g/mL for water.) The freezing point of the solution is -7.01 ∘C. The mass percent composition of the compound is 38.70% C, 9.74% H, and the rest is O. What is the molecular formula of the compound? Express your answer as a molecular formula So far I got CH3O as my empirical, but I can't seem to figure out how...
Question 15 (2 points) Which salt forms a solution with a pH < 7 when dissolved...
Question 15 (2 points) Which salt forms a solution with a pH < 7 when dissolved in water? OA) NaCH3COO OB) LINO2 OC) (NH4)2SO4 OD Rbl
1.Which compound is the most soluble in water?
A. CH3CH2CH2CH2CH2OH B. CH3CH2CH2CH2OH
C. CH3CH2CH2CH2CH2CH2CH2OH D. CH3CH2CH2OH
E. All of these compounds are equally soluble in water.
2. Which of these compounds is a strong electrolyte?
A. H2O B. O2 C. H2SO4 D. C6H12O6 (glucose) E. CH3COOH (acetic
acid)
3. Hexachlorophene is used as a disinfectant in germicidal
soaps. What mass of hexachlorophene (406.9 g/mol) must be added to
125 g of chloroform to give a solution with a boiling point...
Which of the following compounds would you expect to create a
strong electrolyte solution when dissolved in water?
а. СН206 b. SO2 с. ССЦ d. KCl е. F2
Which salt forms a basic solution when dissolved in water? ОА) КСІ OB) LINO3 C) Na3PO4 UD) NH Br
Which of the following will produce a basic solution when dissolved in water? CH_3OH CH_3NH_2 CH_3COOH both A and B all of them Which of the following alcohol, do you expect to be the least water soluble? CH_3-OH CH_3CH_2-OH HO-CH_2CH_2CH_2-OH CH_3CH_2CH_2CH_2CH_2-OH Do the following two structures represent:
2. A colorless crystalline compound when dissolved in water formed a colorless solution . This compound was heated in a clean, dry test tube. This heating produced several drop- lets of water on the upper region of the test tube. The residue was dissolved in water and formed a yellow-brown solution. a. Determine if this colorless crystalline compound is a true hydrate or not. b. Give reasons.
Question 15 (2 points) Which salt forms a solution with a pH < 7 when dissolved in water? OA) NaCH3COO OB) LINO2 OC) (NH4)2SO4 OD Rbl
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