Bronstead - Study guides, Class notes & Summaries

Solve these ideal gas law problems. Show all work for credit. 1. A gas occupies 250 mL at 739 mmHg. For a gas at constant temperature, determine the volume of gas at 514 mmHg. (1.5 points) 2. Use the molar volume of a gas, at STP, to determine the number of moles of CO2 in 4.00 L of CO2 gas. (1.5 points) 3. A sample of nitrogen (N2) has a volume of 50.0 L at a pressure of 2 ATM. What is the volume of gas at a pressure of 15 atm, if there is no change in temperature? (1.5 points) 4. A 0.6 L...

at equilibrium, concentration - ANSWER-stops changing The equilibrium constant, Kp, for the following reaction is 1.04×10-2 at 548 K. Calculate Kc for this reaction at this temperature. - ANSWER-Use the equation kp=Kc(RT)^(change in moles of gas) Or, use kc=Kp(RT)^(-change in moles of gas) *remember, r is 0.0821 L/m* if the change in moles is equal to 0, kp=kc if Kc is less than one, will it be product favored or reactant favored at equilibrium? - ANSWER-reactant favored if Kc is gre...

What is the Bronstead-Lowry definition of an Acid? - ️️They are proton DONORS! [H+] What is the Bronstead-Lowry definition of a Base? - ️️They are proton ACCEPTORS! [H+] Example/further description of Bronstead-Lowry Acids - ️️These give AwAy protons; emphasis on the A's.... "A.P.A." Example/further description of Bronstead-Lowery Bases - ️️protons Belong to them, they Bring them in... emphasis on the B's.... "P.B.B." What is a STRONG Base and Acid? -️️These diss...

TOF steps - CORRECT ANSWER-1) ionisation 2) acceleration 3) ion drift 4) detection 5) analysis Electron impact - CORRECT ANSWER-Sample vaporised and electron gun fires high energy electrons at it which knock off 1 electron from each particle, making them 1+ ions NB- can knock off more than one e or break molecular ion electrospray ionization - CORRECT ANSWER-Sample dissolved in volatile solvent then injected through needle to give fine mist which is attached to positive end of high v...

CHEM120 Week 4 Assignment: Gas and Acid/Base Chemistry – With 100% Correct Answers 1. Solve these ideal gas law problems. Show all work for credit. a. A gas occupies 250 mL at 739 mmHg. For a ga s at constant temperature, determine the volume of gas at 514 mmHg. (1 points) P*V=P*V 739*250 = 514*V 184750/514 = 359 b. Use the molar volume of a gas, at STP, to determine the number of moles of CO2 in 4.00 L of CO2 gas. (1 points) 22.4L/mol 4*(1/22.4) 0.179 c. A sample of nitrogen (N2) has a volume...

Solve these ideal gas law problems. Show all work for credit. 1. A gas occupies 250 mL at 739 mmHg. For a gas at constant temperature, determine the volume of gas at 514 mmHg. (1.5 points) 2. Use the molar volume of a gas, at STP, to determine the number of moles of CO2 in 4.00 L of CO2 gas. (1.5 points) 3. A sample of nitrogen (N2) has a volume of 50.0 L at a pressure of 2 ATM. What is the volume of gas at a pressure of 15 atm, if there is no change in temperature? (1.5 points) 4. A 0.6 L...

Notes on this doc include: the mechanisms of acid/base reactions Bronstead-Lowry and Lewis acids and bases Endothermic/Exothermic reactions Determining weaker and stronger acid/ base Pka & Ka Determining acidity of an atom or molecule Energy of a reaction Test prep practice questions

Chapter 8 covers solutions/ solubility and the factors that affect solubility. Also covers solubility rules and concentration plus how to calculate concentration. Chapter 9 covers reactions and types of reactions. Also has rules for assigning oxidation numbers. collision theory and redox reactions are also covered in this chapter, as well as exothermic/endothermic reactions. Chapter 10 covers acid, salts and bases. This chapter includes arrhenius bases and bronstead-lowry bases. Also shows how t...

  formal charge - Correct Answers: group # - lone pairs (NBE) - bonds (1/2 valence electrons) valence electrons - Correct Answers: electrons in the outer most shell Atom - Correct Answers: Smallest particle of an element protons+neutrons surrounded by electrons octet rule - Correct Answers: States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons Pauli Exclusion Principle - Correct Answers: An atomic orbital may describe at most ...

Week 4 Assignment: 20 points 1. Solve these ideal gas law problems. Show all work for credit. a. A gas occupies 250 mL at 739 mmHg. For a gas at constant temperature, determine the volume of gas at 514 mmHg. (1 points) P*V=P*V 739*250 = 514*V /514 = 359 b. Use the molar volume of a gas, at STP, to determine the number of moles of CO2 in 4.00 L of CO2 gas. (1 points) 22.4L/mol 4*(1/22.4) 0.179 c. A sample of nitrogen (N2) has a volume of 50.0 L at a pressure of 2 ATM. What is the vo...