Instructions for AP/IB 2 Chem Summer Assignment Note
... i) soluble salts: all nitrates, acetates, alkali metals compounds and ammonium compounds are always soluble (no exceptions). ii) insoluble salts: compounds of lead, silver, cadmium and mercury (except those trumped by rule i ) iii) Compounds of calcium, barium, strontium and transition metals are in ...
... i) soluble salts: all nitrates, acetates, alkali metals compounds and ammonium compounds are always soluble (no exceptions). ii) insoluble salts: compounds of lead, silver, cadmium and mercury (except those trumped by rule i ) iii) Compounds of calcium, barium, strontium and transition metals are in ...
makeup6
... 3. In which pair are the elements most similar in their chemical properties? (A) B and N (B) Li and Fr (C) Mg and Al (D) S and Cl 4. A 4.0 g sample of impure Ca(NO3)2 was found to contain 0.85 g of calcium. What percentage of Ca(NO3)2 was in the original sample? (molar mass of Ca(NO3)2 = 164.1 g mol ...
... 3. In which pair are the elements most similar in their chemical properties? (A) B and N (B) Li and Fr (C) Mg and Al (D) S and Cl 4. A 4.0 g sample of impure Ca(NO3)2 was found to contain 0.85 g of calcium. What percentage of Ca(NO3)2 was in the original sample? (molar mass of Ca(NO3)2 = 164.1 g mol ...
2015 Academic Challenge CHEMISTRY TEST – STATE
... Most chloride, bromide, and iodide salts are soluble except those of Ag+, Pb2+, and Hg22+. Most sulfates are soluble with the exception of Ba2+, Pb2+, Hg22+, and Ca2+ Most hydroxide salts are only slightly soluble with the exception of Group 1 hydroxides. Group 2 (Ba2+ to Ca2+) are slightly soluble. ...
... Most chloride, bromide, and iodide salts are soluble except those of Ag+, Pb2+, and Hg22+. Most sulfates are soluble with the exception of Ba2+, Pb2+, Hg22+, and Ca2+ Most hydroxide salts are only slightly soluble with the exception of Group 1 hydroxides. Group 2 (Ba2+ to Ca2+) are slightly soluble. ...
CHEMISTRY 313 PHYSICAL CHEMISTRY I Additional Problems for
... with its vapor in a closed vessel. (a) How many phases and components are present. (b) What is the variance of the system? Identify the independent variables. III.10. Suppose that the solution referred to in Problem III.9 is not saturated. (a) How many phases and components are present. (b) What is ...
... with its vapor in a closed vessel. (a) How many phases and components are present. (b) What is the variance of the system? Identify the independent variables. III.10. Suppose that the solution referred to in Problem III.9 is not saturated. (a) How many phases and components are present. (b) What is ...
Semester II Exam Review Questions
... 6. Aqueous Calcium hydroxide combines with aqueous ammonium chloride, forming aqueous Ammonium hydroxide and aqueous Calcium Chloride. ...
... 6. Aqueous Calcium hydroxide combines with aqueous ammonium chloride, forming aqueous Ammonium hydroxide and aqueous Calcium Chloride. ...
Section B - 8 UNO NON-WASTE CHEMICAL STORAGE
... compatibility categories have been developed for use at UNO. Incompatibilities within those categories are broken down into classes. These compatibility classes are described below. The compatibility classes are prioritized based on the potential for reaction and severity of the hazard posed. (For e ...
... compatibility categories have been developed for use at UNO. Incompatibilities within those categories are broken down into classes. These compatibility classes are described below. The compatibility classes are prioritized based on the potential for reaction and severity of the hazard posed. (For e ...
CHEMISTRY 1710 - Practice Exam #2 (KATZ)
... water bath at 99°C. The barometric pressure is 753 torr. If the mass of the liquid retained in the flask is 1.362 g, what is its molar mass? a. ...
... water bath at 99°C. The barometric pressure is 753 torr. If the mass of the liquid retained in the flask is 1.362 g, what is its molar mass? a. ...
Exam 2, Fall 2001
... Substitute Question for Page 4: Cobalt(III) ion forms many compounds with ammonia. To find the formula of one of these compounds, you titrate the NH3 in the compound with standardized acid. Co(NH3)xCl3(aq) + x HCl(aq) → x NH4+(aq) + Co3+(aq) + (x + 3) Cl-(aq) Assume that 23.63 mL of 1.500 M HCl is u ...
... Substitute Question for Page 4: Cobalt(III) ion forms many compounds with ammonia. To find the formula of one of these compounds, you titrate the NH3 in the compound with standardized acid. Co(NH3)xCl3(aq) + x HCl(aq) → x NH4+(aq) + Co3+(aq) + (x + 3) Cl-(aq) Assume that 23.63 mL of 1.500 M HCl is u ...
anna-chrobok-silesian-university-of-technology
... material science, or engineering and where even business and economy-related issues play an important role in: - determining the planning, the design and the realization of a project in the area. It is a field where many technologies and opportunities are offered to successfully realize an easy reco ...
... material science, or engineering and where even business and economy-related issues play an important role in: - determining the planning, the design and the realization of a project in the area. It is a field where many technologies and opportunities are offered to successfully realize an easy reco ...
Gas-forming Reactions
... In every redox reaction, some substance is oxidized and another substance reduced. One cannot occur without the other. The substance that is reduced is by definition the substance that oxidizes the other—it is called the oxidizing agent. Likewise, the substance that is oxidized must reduce the other ...
... In every redox reaction, some substance is oxidized and another substance reduced. One cannot occur without the other. The substance that is reduced is by definition the substance that oxidizes the other—it is called the oxidizing agent. Likewise, the substance that is oxidized must reduce the other ...
South Pasadena • AP Chemistry
... a) all salts containing NH4+ are soluble. b) all salts containing NO3– are soluble. c) all fluorides are soluble. d) all sulfates (except those of Ca2+, Sr2+, Ba2+, and Pb2+) are soluble. e) most hydroxides are insoluble, except those of Ca2+, Sr2+, Ba2+, the alkali metals and NH4+. ...
... a) all salts containing NH4+ are soluble. b) all salts containing NO3– are soluble. c) all fluorides are soluble. d) all sulfates (except those of Ca2+, Sr2+, Ba2+, and Pb2+) are soluble. e) most hydroxides are insoluble, except those of Ca2+, Sr2+, Ba2+, the alkali metals and NH4+. ...
Liquid–liquid extraction
Liquid–liquid extraction (LLE) consists in transferring one (or more) solute(s) contained in a feed solution to another immiscible liquid (solvent). The solvent that is enriched in solute(s) is called extract. The feed solution that is depleted in solute(s) is called raffinate.Liquid–liquid extraction also known as solvent extraction and partitioning, is a method to separate compounds based on their relative solubilities in two different immiscible liquids, usually water and an organic solvent. It is an extraction of a substance from one liquid into another liquid phase. Liquid–liquid extraction is a basic technique in chemical laboratories, where it is performed using a variety of apparatus, from separatory funnels to countercurrent distribution equipment. This type of process is commonly performed after a chemical reaction as part of the work-up.The term partitioning is commonly used to refer to the underlying chemical and physical processes involved in liquid–liquid extraction, but on another reading may be fully synonymous with it. The term solvent extraction can also refer to the separation of a substance from a mixture by preferentially dissolving that substance in a suitable solvent. In that case, a soluble compound is separated from an insoluble compound or a complex matrix.Solvent extraction is used in nuclear reprocessing, ore processing, the production of fine organic compounds, the processing of perfumes, the production of vegetable oils and biodiesel, and other industries.Liquid–liquid extraction is possible in non-aqueous systems: In a system consisting of a molten metal in contact with molten salts, metals can be extracted from one phase to the other. This is related to a mercury electrode where a metal can be reduced, the metal will often then dissolve in the mercury to form an amalgam that modifies its electrochemistry greatly. For example, it is possible for sodium cations to be reduced at a mercury cathode to form sodium amalgam, while at an inert electrode (such as platinum) the sodium cations are not reduced. Instead, water is reduced to hydrogen. A detergent or fine solid can be used to stabilize an emulsion, or third phase.