Chem 1411 Chapt2
... Types of CompoundsIonic- Consists of metals and non-metals (Or in general cations and anions). NaCl, MgCl2, K2S, Na2SO4 Molecular (covalent)- Consists of non-metals only. HCl, N2O4, C3H6O, C6H12O6 Note- All compounds can be molecules; not all molecules can be compounds. Ions- Are chemical species th ...
... Types of CompoundsIonic- Consists of metals and non-metals (Or in general cations and anions). NaCl, MgCl2, K2S, Na2SO4 Molecular (covalent)- Consists of non-metals only. HCl, N2O4, C3H6O, C6H12O6 Note- All compounds can be molecules; not all molecules can be compounds. Ions- Are chemical species th ...
X012/11/02
... Marks 2. In the PPA, “Effect of temperature on reaction rate”, the reaction between sodium thiosulphate solution and dilute hydrochloric acid is investigated. ...
... Marks 2. In the PPA, “Effect of temperature on reaction rate”, the reaction between sodium thiosulphate solution and dilute hydrochloric acid is investigated. ...
Document
... The energy released by forming products is GREATER than the energy required to break the reactant’s bonds It’s surroundings would feel hot, because heat (energy) is being released. ...
... The energy released by forming products is GREATER than the energy required to break the reactant’s bonds It’s surroundings would feel hot, because heat (energy) is being released. ...
2 - DrChoChemistryWebSite
... Reactants must be an element and a compound. Products will be a different element and a different compound. Na + KCl K + NaCl (Cations switched) F2 + LiCl LiF + Cl2 (Anions switched) ...
... Reactants must be an element and a compound. Products will be a different element and a different compound. Na + KCl K + NaCl (Cations switched) F2 + LiCl LiF + Cl2 (Anions switched) ...
0_specific - ugc-inno
... Is it possible to investigate the role of water mediation to such an extent that, the zwitterion form becomes more stable in such a surrounding as compared to the nonionic form? ...
... Is it possible to investigate the role of water mediation to such an extent that, the zwitterion form becomes more stable in such a surrounding as compared to the nonionic form? ...
Packet 2- Chemistry of Life
... A. (You might want to REVIEW your understanding of pH. Check out our website, which directs you to the Bio 1 lecture on Chemistry if you want a refresher.) 3. Buffers are substances that manage to prevent drastic changes in pH...they do this by removing (or adding ) H+ ions from/to a solution. ...
... A. (You might want to REVIEW your understanding of pH. Check out our website, which directs you to the Bio 1 lecture on Chemistry if you want a refresher.) 3. Buffers are substances that manage to prevent drastic changes in pH...they do this by removing (or adding ) H+ ions from/to a solution. ...
Exam practice answers
... (There are 2 marks for the errors and 1 mark for either improvement.) Students often criticise apparatus without carefully considering the error. Given that the temperature rise was approximately 50C, if the thermometer used measured to the nearest degree, then the percentage error in measuring the ...
... (There are 2 marks for the errors and 1 mark for either improvement.) Students often criticise apparatus without carefully considering the error. Given that the temperature rise was approximately 50C, if the thermometer used measured to the nearest degree, then the percentage error in measuring the ...
Environmental Chemistry
... These non-metal oxides are all gases Their acidic products all contribute to the acidity of rain. Note: strong acids completely dissociate to their ions, so that a monoprotic acid will have the same hydronium ion concentration as the original concentration of the acid. ...
... These non-metal oxides are all gases Their acidic products all contribute to the acidity of rain. Note: strong acids completely dissociate to their ions, so that a monoprotic acid will have the same hydronium ion concentration as the original concentration of the acid. ...
E:\My Documents\sch3u\SCH3Ureview.wpd
... b) If 55.5 mL of 0.25 mol/L Potassium chloride completely reacts, what mass of Lead (II) chloride should be produced? 10) A solution of Lithium hydroxide is titrated using a standard solution of 0.150 mol/L sulfuric acid. 2LiOH(aq) + H2SO4(aq) —> 2H2O(l) + Li2SO4(aq) a) If 25.0 mL of the acid are ne ...
... b) If 55.5 mL of 0.25 mol/L Potassium chloride completely reacts, what mass of Lead (II) chloride should be produced? 10) A solution of Lithium hydroxide is titrated using a standard solution of 0.150 mol/L sulfuric acid. 2LiOH(aq) + H2SO4(aq) —> 2H2O(l) + Li2SO4(aq) a) If 25.0 mL of the acid are ne ...
AP Review Chp 1 and Chp 2 Wed 10/9/2013 1. Near room
... I) Magnesium displaces copper from a dilute solution of copper ( II) sulfate; the pure copper will settle out of the solution. Mg(s) + CuSO4(aq) MgSO4(aq) + Cu(s) A copper(II) sulfate solution is mixed by dissolving 25.000 g of copper(II) sulfate, and then it is treated with an excess of magnesium ...
... I) Magnesium displaces copper from a dilute solution of copper ( II) sulfate; the pure copper will settle out of the solution. Mg(s) + CuSO4(aq) MgSO4(aq) + Cu(s) A copper(II) sulfate solution is mixed by dissolving 25.000 g of copper(II) sulfate, and then it is treated with an excess of magnesium ...
2011-2012 Paper 1
... 2. (a) Scientists believe that liquid hydrogen could be a substitute for fossil fuel in future. (i) Liquid hydrogen is used as a fuel in space shuttles now. Explain why liquid, but not gas, is used. ...
... 2. (a) Scientists believe that liquid hydrogen could be a substitute for fossil fuel in future. (i) Liquid hydrogen is used as a fuel in space shuttles now. Explain why liquid, but not gas, is used. ...
PPT - kimscience.com
... • Hydrogen gas is produced when sodium metal is added to water. What mass of sodium is necessary to produce 20.0L of hydrogen at STP? • Remember: 22.4L/mol for STP 2Na(s) ...
... • Hydrogen gas is produced when sodium metal is added to water. What mass of sodium is necessary to produce 20.0L of hydrogen at STP? • Remember: 22.4L/mol for STP 2Na(s) ...
OXIDATION NUMBERS
... An electrode is half a cell. If two different electrodes are connected together, an electrochemical cell is formed. Usually, two electrode compartments are joined by a salt bridge. A salt bridge allows ions to flow, thus completing the electrical circuit, but prevents the ions in the two electrode c ...
... An electrode is half a cell. If two different electrodes are connected together, an electrochemical cell is formed. Usually, two electrode compartments are joined by a salt bridge. A salt bridge allows ions to flow, thus completing the electrical circuit, but prevents the ions in the two electrode c ...
Chemistry Unit Review
... b. When sugar (C12H22O11) and sulfuric acid (H2SO4) are combined, carbon, water, and sulfur dioxide are formed. ...
... b. When sugar (C12H22O11) and sulfuric acid (H2SO4) are combined, carbon, water, and sulfur dioxide are formed. ...
Homework Booklet Unit 1 Feb14
... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
National 5 Unit 1 Homework Booklet
... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
Slide 1 of 24
... Propane gas reacts with oxygen to produce water vapor and carbon dioxide. Choose the correct word equation for this reaction. A. propane + carbon dioxide → water + oxygen B. propane + oxygen + water → carbon dioxide C. propane + oxygen + water + carbon dioxide D. propane + oxygen → water + carbon ...
... Propane gas reacts with oxygen to produce water vapor and carbon dioxide. Choose the correct word equation for this reaction. A. propane + carbon dioxide → water + oxygen B. propane + oxygen + water → carbon dioxide C. propane + oxygen + water + carbon dioxide D. propane + oxygen → water + carbon ...
General, Organic, and Biological Chemistry
... K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + KNO3 A) KPO4 + CaNO3 + KNO3 B) K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + 3KNO3 C) 2K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + 6KNO3 D) 2K3PO4 + 3Ca(NO3)2 → Ca3(PO4)2 + 6KNO3 E) K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + KNO3 94) The following reaction takes place when an electric current is passed throu ...
... K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + KNO3 A) KPO4 + CaNO3 + KNO3 B) K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + 3KNO3 C) 2K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + 6KNO3 D) 2K3PO4 + 3Ca(NO3)2 → Ca3(PO4)2 + 6KNO3 E) K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + KNO3 94) The following reaction takes place when an electric current is passed throu ...
Presentation - Chem Rxns - stpats-sch3u-sem1-2013
... Most metallic hydroxides, when heated, decompose into metallic oxides and water. EX. Ca(OH)2(s) → CaO(s) + H2O(g) Metallic chlorates, when heated, decompose into metallic chlorides and oxygen. EX. 2KClO3(s) → 2KCl(s) + 3O2(g) Some acids, when heated, decompose into nonmetallic oxides and water. EX. ...
... Most metallic hydroxides, when heated, decompose into metallic oxides and water. EX. Ca(OH)2(s) → CaO(s) + H2O(g) Metallic chlorates, when heated, decompose into metallic chlorides and oxygen. EX. 2KClO3(s) → 2KCl(s) + 3O2(g) Some acids, when heated, decompose into nonmetallic oxides and water. EX. ...
Various Types of RXNS
... --the yellow/orange color of the mixture turns dirty looking, eventually light green (Fe2+) and perhaps to colorless (Fe + Mg2+) 4. 3 H2 + Fe2O3 → 2 Fe + 3 H2O --the iron in the Fe2O3 is reduced to Fe 5. 2 Na + 2 H2O → 2 Na+ + 2 OH- + H2 --if some of the gas is collected in a test tube of air and a ...
... --the yellow/orange color of the mixture turns dirty looking, eventually light green (Fe2+) and perhaps to colorless (Fe + Mg2+) 4. 3 H2 + Fe2O3 → 2 Fe + 3 H2O --the iron in the Fe2O3 is reduced to Fe 5. 2 Na + 2 H2O → 2 Na+ + 2 OH- + H2 --if some of the gas is collected in a test tube of air and a ...
Brønsted acid
... In a titration a solution of accurately known concentration is added gradually added to another solution of unknown concentration until the chemical reaction between the two solutions is complete. Equivalence point – the point at which the reaction is complete Indicator – substance that changes colo ...
... In a titration a solution of accurately known concentration is added gradually added to another solution of unknown concentration until the chemical reaction between the two solutions is complete. Equivalence point – the point at which the reaction is complete Indicator – substance that changes colo ...
Electrolysis of water
Electrolysis of water is the decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) due to an electric current being passed through the water.This technique can be used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though currently most industrial methods make hydrogen fuel from natural gas instead.