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(a)
Interpretation:
The technique used to separate the mixture of table salt and pepper into pure components is to be described.
Concept introduction:
The basic techniques of separation of mixture components are:
Filtration - The method of filtration is used to separate the components of a mixture whose particle sizes are different. Filtration is also used to separate solids from liquids using sieve plates.
Crystallization - The method of crystallization involves the separation of components from a mixture in which the components have a difference in their solubility in a particular solvent. On cooling down the solution, the desired component crystallizes out of the solution.
Distillation - This method involves heating and cooling the mixture with components having large differences in their boiling points. The component with lower boiling point vapourises first. The component vapours are cooled down and collected in separate containers.
Chromatography - This separation technique is based on the difference between the solubilities of the components of a mixture in mobile and stationary phases. The component having greater solubility in the mobile phase is separated and collected first whereas the component with greater solubility in the stationary phase is separated later.
(b)
Interpretation:
The technique used to separate the mixture of drinking water and soot into pure components is to be described.
Concept introduction:
The basic techniques of separation of mixture components are:
Filtration - The method of filtration is used to separate the components of a mixture whose particle sizes are different. Filtration is also used to separate solids from liquids using sieve plates.
Crystallization - The method of crystallization involves the separation of components from a mixture in which the components have a difference in their solubility in a particular solvent. On cooling down the solution, the desired component crystallizes out of the solution.
Distillation - This method involves heating and cooling the mixture with components having large differences in their boiling points. The component with lower boiling point vapourises first. The component vapours are cooled down and collected in separate containers.
Chromatography - This separation technique is based on the difference between the solubilities of the components of a mixture in mobile and stationary phases. The component having greater solubility in the mobile phase is separated and collected first whereas the component with greater solubility in the stationary phase is separated later.
(c)
Interpretation:
The technique used to separate the mixture of crushed ice and crushed glass into pure components is to be described.
Concept introduction:
The basic techniques of separation of mixture components are:
Filtration - The method of filtration is used to separate the components of a mixture whose particle sizes are different. Filtration is also used to separate solids from liquids using sieve plates.
Crystallization - The method of crystallization involves the separation of components from a mixture in which the components have a difference in their solubility in a particular solvent. On cooling down the solution, the desired component crystallizes out of the solution.
Distillation - This method involves heating and cooling the mixture with components having large differences in their boiling points. The component with lower boiling point vapourises first. The component vapours are cooled down and collected in separate containers.
Chromatography - This separation technique is based on the difference between the solubilities of the components of a mixture in mobile and stationary phases. The component having greater solubility in the mobile phase is separated and collected first whereas the component with greater solubility in the stationary phase is separated later.
(d)
Interpretation:
The technique used to separate the mixture of sugar dissolved in ethanol into pure components is to be described.
Concept introduction:
The basic techniques of separation of mixture components are:
Filtration - The method of filtration is used to separate the components of a mixture whose particle sizes are different. Filtration is also used to separate solids from liquids using sieve plates.
Crystallization - The method of crystallization involves the separation of components from a mixture in which the components have a difference in their solubility in a particular solvent. On cooling down the solution, the desired component crystallizes out of the solution.
Distillation - This method involves heating and cooling the mixture with components having large differences in their boiling points. The component with lower boiling point vapourises first. The component vapours are cooled down and collected in separate containers.
Chromatography - This separation technique is based on the difference between the solubilities of the components of a mixture in mobile and stationary phases. The component having greater solubility in the mobile phase is separated and collected first whereas the component with greater solubility in the stationary phase is separated later.
(e)
Interpretation:
The technique used to separate two pigments chlorophyll a and chlorophyll b from spinach leaves is to be described.
Concept introduction:
The basic techniques of separation of mixture components are:
Filtration - The method of filtration is used to separate the components of a mixture whose particle sizes are different. Filtration is also used to separate solids from liquids using sieve plates.
Crystallization - The method of crystallization involves the separation of components from a mixture in which the components have a difference in their solubility in a particular solvent. On cooling down the solution, the desired component crystallizes out of the solution.
Distillation - This method involves heating and cooling the mixture with components having large differences in their boiling points. The component with lower boiling point vapourises first. The component vapours are cooled down and collected in separate containers.
Chromatography - This separation technique is based on the difference between the solubilities of the components of a mixture in mobile and stationary phases. The component having greater solubility in the mobile phase is separated and collected first whereas the component with greater solubility in the stationary phase is separated later.
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Chapter 2 Solutions
Chemistry: The Molecular Nature of Matter and Change - Standalone book
- Q3: Arrange each group of compounds from fastest SN2 reaction rate to slowest SN2 reaction rate. a) CI Cl فيكم H3C-Cl A B C D Br Br b) A B C Br H3C-Br Darrow_forwardQ2: Group these solvents into either protic solvents or aprotic solvents. Acetonitrile (CH3CN), H₂O, Acetic acid (CH3COOH), Acetone (CH3COCH3), CH3CH2OH, DMSO (CH3SOCH3), DMF (HCON(CH3)2), CH3OHarrow_forwardSuppose the rate of evaporation in a hot, dry region is 1.76 meters per year, and the seawater there has a salinity of 35 ‰. Assuming a 93% yield, how much salt (NaCl) can be harvested each year from 1 km2 of solar evaporation ponds that use this seawater as a source?arrow_forward
- helparrow_forwardExplain why only the lone pairs on the central atom are taken into consideration when predicting molecular shapearrow_forward(ME EX1) Prblm #9/10 Can you explain in detail (step by step) I'm so confused with these problems. For turmber 13 can u turn them into lewis dot structures so I can better understand because, and then as well explain the resonance structure part. Thanks for the help.arrow_forward
- Problems 19 and 20: (ME EX1) Can you please explain the following in detail? I'm having trouble understanding them. Both problems are difficult for me to explain in detail, so please include the drawings and answers.arrow_forward(ME EX1) Prblm #4-11 Can you please help me and explain these I'm very confused in detail please. Prblm number 9 I don't understand at all (its soo confusing to me and redraw it so I can better depict it).arrow_forwardME EX1) Prblm #19-20 I'm so confused with these problems. Can you please help me solve them and explain them? Problems number 19-20, and thanks! step by step and in detail for me please helparrow_forward
- Calculate the flux of oxygen between the ocean and the atmosphere, given that: Temp = 18°C Salinity = 35 ppt Density = 1025 kg/m3 Oxygen concentration measured in bulk water = 263.84 mmol/m3 Wind speed = 7.4 m/s Oxygen is observed to be about 10% initially supersaturatedarrow_forward( ME EX1) Prblm 27-28: Can you explain to me both prblms in detail and for prblm 28 what do you mean bi conjugated bi ponds and those structures I'm confused...arrow_forwardA. Determine the number of electrons in a system of cyclic conjugation (zero if no cyclic conjugation). B. Specify whether the species is "a"-aromatic, "aa"-anti-aromatic, or "na"-non-aromatic (neither aromatic nor anti-aromatic). (Presume rings to be planar unless structure obviously prevents planarity. If there is more than one conjugated ring, count electrons in the largest.) 1. A.Electrons in a cyclic conjugated system. 18 B.The compound is (a, aa, or na) a 2. A.Electrons in a cyclic conjugated system. 10 B.The compound is (a, aa, or na) naarrow_forward
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