Watch the following reaction and fill in the data table provided. Sodium thiosulfate is combined with hydrochloric acid. One of the products is solid.

Slides:

Advertisements

Similar presentations

Calculations involving neutralization reactions

Advertisements

Question 1: 20cm 3 of hydrochloric acid with concentration 0.5 mol/dm 3 is needed to neutralise 25 cm 3 of sodium hydroxide. What is the concentration.

Chapter 13 Chemical Kinetics

Identify the limiting reactant and calculate the mass of a product, given the reaction equation and reactant data. Include: theoretical yield, experimental.

Module 3 Lesson 10 – Practical and Arrhenius. Objectives Must Describe qualitatively, using the Boltzmann distribution, the effect of temperature changes.

Chemical Equilibrium Chapter 18. Chemical Equilibrium Happens to any reversible reaction in a closed system Happens to any reversible reaction in a closed.

Chemical Equilibrium. Reversible Reactions Reversible reactions are those in which the products can react to re-form reactants. Ex: 2HgO (s) + heat >

Chapter 17.  Most reactions do not proceed to completion.  N 2 (g) + H 2 (g)  2NH 3 (g)  2NH 3 (g)  N 2 (g) + H 2 (g)

1 Nov  Take Out Homework: Week 8 Homework #1-20  Objective: SWBAT review “the language of chemistry” for a test.  Do now: Write the formula equation.

Lecture 21/21/05. Law of Mass Action Example H 2 (g) + I 2 (g) ↔ 2HI (g)

Chapter 12 Solutions Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings.

Entry Task: Dec 16 th Monday Self-Check Ch. 15 sec. 1-4 Pre-lab Determine Keq Lab MAYHAN.

& 9.11 Titration Calculations Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings Chapter 9 Acids, Bases, & Salts Base (NaOH)

Titrations Chem 12 Chapter 15 Pg ,

ACIDS AND BASES Ionization of Water. Describe the relationship between the hydronium and hydroxide ion concentrations in water Include: the ion product.

Double Replacement Prediction I can predict the two products that will be created from a double replacement reaction.

Acids and Bases.

SO 2 gas and BrO 3 -. Sulfur dioxide gas is generated by reacting dilute hydrochloric acid with solid sodium sulfite. 2HCl(aq) + Na 2 SO 3 (s) → SO 2.

Balanced equations. HIGHER GRADE CHEMISTRY CALCULATIONS Calculation from a balanced equation A balanced equation shows the number of moles of each reactant.

TITRATION This involves removing small samples from the reaction mixture at different times and then titrating the sample to determine the concentration.

Chemical Change Reactants Products What happens to bonds in a chemical reaction? Broken, form new bonds.

Pb(NO3)2 (aq) + 2NaI (aq) PbI2 (s) + 2NaNO3 (aq) Objectives

 Rate Of Reaction & Temperature Noadswood Science, 2012.

1 STOICHIOMETRY 2 Sample problem for general problem solving. Sam has entered into a 10 mile marathon. Use ALL of the following conversions (ratios)

Acids and Bases. Svante Arrhenius In the 1880’s, Swedish chemist Svante Arrhenius developed a theory about electrolytes His theory explained why solutions.

Learning Objectives: To be able to read titration questions and understand the information that they contain.

19.4 Neutralization Reactions > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chemists use acid-base reactions to determine.

The thermodynamics of the solubility of borax Determination of ΔH° and ΔS°

Acids and Bases Calculating Excess. Mixing strong acids and bases During an experiment, a student pours 25.0 mL of 1.40 mol/L nitric acid into a beaker.

The Rate Law. Objectives: To understand what a rate law is To determine the overall reaction order from a rate law CLE

NATIONAL 4/5 CHEMISTRY CHEMICAL CHANGES AND STRUCTURE LESSON 2 MEASURING AND CALCULATING THE RATE OF REACTION.

1 Chemical Kinetics Chapter Chemical Kinetics Kinetics is the study of how fast chemical reactions occur and how they occur. There are 4 important.

Chapter 14 Chemical Kinetics Chemical Kinetics CH 141.

Section 8.4 – pg  Experimental designs discussed so far have been QUALitative (flame test, solution colour, litmus test, conductivity, solubility)

Acids and Bases Calculating Excess. Calculations involving strong acids and bases During an experiment, a student pours 25.0 mL of 1.40 mol/L nitric acid.

3.6 Solubility Solution: homogeneous mixture or mixture in which components are uniformly intermingled Solution: homogeneous mixture or mixture in which.

Determining the Coefficients of a Balanced Chemical Equation by Experiment Experiment 1 The Reaction of a Metal with a Strong Acid.

IB Topic 1: Quantitative Chemistry 1.5 Solutions  Distinguish between the terms solute, solvent, solution and concentration (g dm -3 and mol dm -3 ) 

Acid Base Calculations Calculations involving pH Titration calculations.

Neutralization Reactions acidbaseacid + base  salt + water HX(aq)MOH(aq)HX(aq) + MOH(aq)  MX(aq) + H 2 O(l) this is a DR rxn.

Entry Task: Nov 15th Friday Turn in Na 2 S 2 O 3 Lab on my desk Discuss Rate and Order ws Pre-Lab Discussion on Crystal Violet lab MAYHAN.

Acid-Base Reactions and Titration Curves. Neutralization Reactions Neutralization reactions occur when a base is added to an acid to neutralize the acid’s.

Basic Chemistry Copyright © 2011 Pearson Education, Inc. 1 Chapter 12 Solutions 12.6 Solutions in Chemical Reactions When a BaCl 2 solution is added to.

Acid-Base Titrations.

- Strong Acids & Bases – - - Autoionization of Water - 1.

Topic: Neutralization Reaction Do Now:. Neutralization Reactions AcidAcid HX(aq)MOH(aq) HX(aq) + MOH(aq) → MX(aq) +H 2 O(l) + Base → Salt + Water DR rxn.

Theoretical yield: amounts of product calculated from the limiting reagent. Actual yield: amount produced during the conducted experiment. Percentage.

To Do… Electronic homework (Lon-Capa) HW4 Type 1 due Monday, March 10 by 7 pm; HW4 Type 2 due Wednesday, March 12 by 7 pm HW5 Type 1 due Monday, March.

Titration Analysis.

Rate Laws.  Determine the rate law from experimental data.  Explain the effect of concentration on reaction rates.  Derive rate law form a reaction.

Strengths of Acids and Bases. Electrical Conductivity Acidic and basic solutions conduct electricity. Acidic and basic solutions conduct electricity.

Equilibrium Calculations Lesson 7. How can we describe an equilibrium system mathematically? Keq = =2.5 The Keq is the equilibrium constant- a number.

Follow the method Let the units guide you. When nitrogen and hydrogen react, they form ammonia gas, NH 3. If 56.0 g of nitrogen are used up in the reaction,

Rates of Reaction.  Familiar with factors which affect reaction rate ◦ Temperature ◦ Particle Size / surface area ◦ Concentration ◦ Catalyst  Average.

Acid-Base Reactions and Titrations Chemistry. Examples of Acid-Base Rxns HNO 3 + KOH  H 2 O + KNO 3 H 2 SO NH 4 OH  (NH 4 ) 2 SO H 2 O LiOH.

Solution Stoichiometry In solution stoichiometry, we are given a concentration and a volume which we use to determine moles. n = C x V Then we use molar.

6.5 Rate Laws & Order of Reaction Rate Law The rate (r), is proportional to the product of the initial reactant concentrations raised to some exponent.

Acid-Base Reactions Adding a base to an acid neutralizes the acid ’ s acidic properties. This reactions is called a neutralization reaction. The products.

How is an equilibrium constant determined? Consider, the experiment you carried out and note down key steps required for any reaction.

What is the acid concentration if 0.4 moles is dissolved in 150 cm 3 ? Molarity Check.

EQUILIBRIUM. Equilibrium Constant (K Values)  The equilibrium constant (Keq) is a number showing the relationship between the concentration of the products.

Titration Calculations Revision. titration - accurate neutralisation of an acid with an alkali data obtained can be used to do calculations equation used.

VOLUMETRIC CALCULATIONS

Strengths of Acids and Bases

Reaction Rates.

Rates of Reactions.

Plan for Today Introductions weebly New Unit: Chemical Reactivity

Presentation transcript:

Watch the following reaction and fill in the data table provided. Sodium thiosulfate is combined with hydrochloric acid. One of the products is solid sulfur. The reaction rate can be determined by timing how long it takes for a marked X to disappear. Na 2 S 2 O 3 (aq) + HCl(aq) --> H 2 O(l) + SO 2 (g) + S 8 (s) + NaCl(aq)

Using the reaction between HCl and Na 2 S 2 O 3 determine a rate equation by conducting 6 trials. The first three trials leave one concentration constant while varying the other concentration by factors of 2. The 2nd 3 trials do the same thing for the other reactant. The formula for concentration change is C 2 = C 1 V 1 /V 2

Calculations 1. Fill in the data table and either show the formulas on a spreadsheet or write them out. 2. Show how you arrived at the rate expression. 4. Calculate the value of k 5. Compare your value of k with another group and calculate the percent difference. (difference/your value)x100

Graphs 1. Time (y axis) vs [HCl] (x axis) 2.Rate (y axis) vs [HCl] (x axis) 3.Time (y axis) vs [Na 2 S 2 O 3 ] (x axis) 4.Rate (y axis) vs [Na 2 S 2 O 3 ] (x axis)

Next Step - Affect of Temperature on Reaction Rate Design an experiment to determine the effect of temperature on the rate of this reaction. Organize your findings in a data table along with calculations. Calculations Find the rate (mol/L/s) at 5 different temperatures. Calculate k at 5 different temperatures.

Graphs 1. Time (y axis) vs temperature (x axis) 2.Rate (y axis) vs temperature (x axis)