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2. What is the molality of a concentrated solution of NH4Cl at 90°C (see diagram)? Solubility...
1. How concentrated is the solution containing 60 g of NH4Cl at 90 °C? A. unsaturated...
1. How concentrated is the solution containing 60 g of NH4Cl at 90 °C? A. unsaturated B. supersaturated C. saturated D. super-unsaturated 2. The solubility of NaNO3 at 10 °C? A. 75 g/100 g water B. 80 g/100 g water C. 85 g/100 g water D. 40 g/100 g water 3. The minimum temperature required to obtain 55 g of KNO3 per 100 g of water? A. 60°C B. 45 °C C. 35 °C D. 55 °C
E3. Answer the following questions from the given solubility curve. Table G Solubility Curves KI NANO,...
E3. Answer the following questions from the given solubility curve. Table G Solubility Curves KI NANO, 140 130 -KNO, 120 110 100 90 80 Solute per 100 g of H, (g) NHẠCI 70 HCI 60 KCI 50 40 30 Naci -KCIO, NH 20 10 SO2 0 0 10 20 30 40 50 60 70 80 90 100 Temperature (°C) (a) How much of the potassium chloride will dissolve and how much remain undissolved at the bottom of the beaker, when...
please answer all dmperstu Use the solubility curve provided on the right to determine the answers to the followi...
please answer all
dmperstu Use the solubility curve provided on the right to determine the answers to the following questions: 7. How many grams of solute are required to saturate 100 g of water in each of the following solutions? a) KCL at 80 C b) KCIO, at 90°C c) NaNO, at 10°C d) SO2 at 20 °C e) NH Cl at 70°C esd. 8. What is each of the solutions below: saturated, unsaturated or supersaturated? All of the solutes...
Mixtures and Solutions 100 90 Instructions: Use the following image to answer the 80 NaNO following...
Mixtures and Solutions 100 90 Instructions: Use the following image to answer the 80 NaNO following questions. 70 CaCl PD(NO 1. A solution contains 40 g of NaCl per 100 g of water 60 at 100 C. Is the solution unsaturated, saturated or 50 supersaturated? кса 40 NaC 30 20 KCIO A solution contains 50 g of KCI per 100 g of water 2. 10 at 25 C. Is the solution unsaturated, saturated or Ce (SO 0 10 20 30...
answer A,b,c and d (((please clarify handwriting ?))) E4. Answer the following questions from the given...
answer A,b,c and d
(((please clarify handwriting ?)))
E4. Answer the following questions from the given solubility curve. 100 90 80 NaNO 70 KC20 60 Cach KNO Solubility (g of salt in 100 g H,0) 50 Pb(NO3)2 KCI 40 Naci 30 20 КСО. 10 0 0 Ce (SO) 10 20 30 40 50 60 70 80 90 100 Temperature (°C) (a) How much water is needed to dissolve 46.6 g of KCIO3 at 70°C? (1 mark) (b) Explain the different...
100 Mixtures and Solutions 90 Instructions: Use the following image to answer the NaNO following questions....
100 Mixtures and Solutions 90 Instructions: Use the following image to answer the NaNO following questions. 70 1. A solution contains 40 g of NaCl per 100g of water 60 CaCl at 100 C. Is the solution unsaturated, saturated or 50 POINO KC supersaturated? 9 40 NaC 30 20 KOO 2. A solution contains 50 g of KCl per 100 g of water at 25 C. Is the solution unsaturated, saturated or 10 Ce(SO); 0 10 20 30 40 50...
2. Briefly explain how the solubility of most salts is related to temperature. What general trend...
2. Briefly explain how the solubility of most salts is related to temperature. What general trend is observed, and why? 3. What factors determine the solubility of a salt in water? Explain. 4. A student is evaluating the solubility of potassium chlorate (KCIO) at various temperatures. She dissolves 2.50 g of KCIO, in a total volume of 7.5 ml of water. a. Calculate the concentration of KCIO, in this solution, b. The student heats the solution up to 80°C and...
What is the vapor pressure of a saturated solution of the ionic compound KClO3 at 70°C?...
What is the vapor pressure of a saturated solution of the ionic
compound KClO3 at 70°C?
x NaNO3 What is the vapor pressure of a saturated solution of the ionic compound KClO3 at 70°C? (20 points) TABLE 10.2 VAPOR PRESSURE OF WATER TEMPERATURE (C) PRESSURE (mm Hg) 118.0 149.4 187.5 233.7 289.1 355.1 433.6 Naci 525.8 633.9 760.0 CaCl2 KNO3 Cr₂O7 Solubility (g of salt in 100 g H20) Pb(NO3)2 KCIK KCIO3 Cez(SO4)3 0 10 20 30 40 50 60...
Part a please Question 3 (30 pts) Lead nitrate (Pb(NO3)2) is a toxic compound used in...
Part a please
Question 3 (30 pts) Lead nitrate (Pb(NO3)2) is a toxic compound used in lead paints in the past. It has far less use now, in specialized applications such as gold extraction. Unlike most lead salts, lead nitrate is soluble in water, as seen below in the solubility chart. After aqueous gold recovery, it is desired to recover the lead nitrate from the water via crystallization. A 70°C aqueous lead nitrate solution containing 50 wt% lead nitrate and...
What are the desirable characteristics of a solvent to be used in the recrystallisation of a...
What are the desirable characteristics of a solvent to be used
in the recrystallisation of a solid product? (Hint: what is the
underlying purpose of doing recrystallisation, aside from making
the product look attractive?)
EXPERIMENT5 PREPARATION OF BENZOIC ACID Oxidation of a Primary Alcohol In this experiment, a primary alcohol (benzyl alcohol) is oxidised to a carboxylic acid (benzoic acid) by a strong oxidising agent (potassium permanganate) Because the synthesis reaction is carried out in basic conditions, the carboxylic acid...
1. How concentrated is the solution containing 60 g of NH4Cl at 90 °C? A. unsaturated B. supersaturated C. saturated D. super-unsaturated 2. The solubility of NaNO3 at 10 °C? A. 75 g/100 g water B. 80 g/100 g water C. 85 g/100 g water D. 40 g/100 g water 3. The minimum temperature required to obtain 55 g of KNO3 per 100 g of water? A. 60°C B. 45 °C C. 35 °C D. 55 °C
E3. Answer the following questions from the given solubility curve. Table G Solubility Curves KI NANO, 140 130 -KNO, 120 110 100 90 80 Solute per 100 g of H, (g) NHẠCI 70 HCI 60 KCI 50 40 30 Naci -KCIO, NH 20 10 SO2 0 0 10 20 30 40 50 60 70 80 90 100 Temperature (°C) (a) How much of the potassium chloride will dissolve and how much remain undissolved at the bottom of the beaker, when...
please answer all
dmperstu Use the solubility curve provided on the right to determine the answers to the following questions: 7. How many grams of solute are required to saturate 100 g of water in each of the following solutions? a) KCL at 80 C b) KCIO, at 90°C c) NaNO, at 10°C d) SO2 at 20 °C e) NH Cl at 70°C esd. 8. What is each of the solutions below: saturated, unsaturated or supersaturated? All of the solutes...
Mixtures and Solutions 100 90 Instructions: Use the following image to answer the 80 NaNO following questions. 70 CaCl PD(NO 1. A solution contains 40 g of NaCl per 100 g of water 60 at 100 C. Is the solution unsaturated, saturated or 50 supersaturated? кса 40 NaC 30 20 KCIO A solution contains 50 g of KCI per 100 g of water 2. 10 at 25 C. Is the solution unsaturated, saturated or Ce (SO 0 10 20 30...
answer A,b,c and d
(((please clarify handwriting ?)))
E4. Answer the following questions from the given solubility curve. 100 90 80 NaNO 70 KC20 60 Cach KNO Solubility (g of salt in 100 g H,0) 50 Pb(NO3)2 KCI 40 Naci 30 20 КСО. 10 0 0 Ce (SO) 10 20 30 40 50 60 70 80 90 100 Temperature (°C) (a) How much water is needed to dissolve 46.6 g of KCIO3 at 70°C? (1 mark) (b) Explain the different...
100 Mixtures and Solutions 90 Instructions: Use the following image to answer the NaNO following questions. 70 1. A solution contains 40 g of NaCl per 100g of water 60 CaCl at 100 C. Is the solution unsaturated, saturated or 50 POINO KC supersaturated? 9 40 NaC 30 20 KOO 2. A solution contains 50 g of KCl per 100 g of water at 25 C. Is the solution unsaturated, saturated or 10 Ce(SO); 0 10 20 30 40 50...
2. Briefly explain how the solubility of most salts is related to temperature. What general trend is observed, and why? 3. What factors determine the solubility of a salt in water? Explain. 4. A student is evaluating the solubility of potassium chlorate (KCIO) at various temperatures. She dissolves 2.50 g of KCIO, in a total volume of 7.5 ml of water. a. Calculate the concentration of KCIO, in this solution, b. The student heats the solution up to 80°C and...
What is the vapor pressure of a saturated solution of the ionic
compound KClO3 at 70°C?
x NaNO3 What is the vapor pressure of a saturated solution of the ionic compound KClO3 at 70°C? (20 points) TABLE 10.2 VAPOR PRESSURE OF WATER TEMPERATURE (C) PRESSURE (mm Hg) 118.0 149.4 187.5 233.7 289.1 355.1 433.6 Naci 525.8 633.9 760.0 CaCl2 KNO3 Cr₂O7 Solubility (g of salt in 100 g H20) Pb(NO3)2 KCIK KCIO3 Cez(SO4)3 0 10 20 30 40 50 60...
Part a please
Question 3 (30 pts) Lead nitrate (Pb(NO3)2) is a toxic compound used in lead paints in the past. It has far less use now, in specialized applications such as gold extraction. Unlike most lead salts, lead nitrate is soluble in water, as seen below in the solubility chart. After aqueous gold recovery, it is desired to recover the lead nitrate from the water via crystallization. A 70°C aqueous lead nitrate solution containing 50 wt% lead nitrate and...
What are the desirable characteristics of a solvent to be used
in the recrystallisation of a solid product? (Hint: what is the
underlying purpose of doing recrystallisation, aside from making
the product look attractive?)
EXPERIMENT5 PREPARATION OF BENZOIC ACID Oxidation of a Primary Alcohol In this experiment, a primary alcohol (benzyl alcohol) is oxidised to a carboxylic acid (benzoic acid) by a strong oxidising agent (potassium permanganate) Because the synthesis reaction is carried out in basic conditions, the carboxylic acid...
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