Chemical equilibrium questions and answers pdf
If loading fails, click here to try again. Question 1. Under a given set of experimental conditions, with increase in the concentration of the reactants, the rate of a chemical reaction. Question 2. K for the synthesis of HI is K for dissociation of HI is. Question 3. Chemical equations convey quantitative information on the. Relative number of moles of reactants and products involved in the reaction. Quantity of reactant consumed and quantity of product formed. Question 4. In a reaction the rate of reaction is proportional to its active mass, this statement is known as.
Question 5. Which of the following is a characteristic of a reversible reaction? Number of moles of reactants and products are equal.
Question 6. The rate at which substances react depends on their. Question 7. A buffer solution has equal volumes of 0. The pK b of the base is 5.
Question 8. Is reversible or irreversible and endothermic or exothermic. Question 9. The chemical equilibrium of a reversible reaction is not influenced by. Question In any chemical reaction, equilibrium is supposed to be establish when. Concentration of reactants and resulting products are equal.Test your understanding with practice problems and step-by-step solutions. Browse through all study tools.
Over 65 million users have prepared for and other exams on Study. The videos on Study. Log in. Sign Up. Explore over 4, video courses. Find a degree that fits your goals. Related Content. Chemistry Questions and Answers Test your understanding with practice problems and step-by-step solutions. View Answer. Why is calcium oxalate converted to CaCO3 during gravimetry?
Identify any 5 scientists who made discoveries in chemistry. Describe the difference between chemistry and chemical technology. Relate the major principles of chemistry to the study of biology. Mention the ten 10 applications of Kohlrausch's law of independent ionic mobility.
Which are faster carriers of heat through a metal: electrons or phonons? Approximately how much faster? What is the difference between to convert and conversion? If a graduated cylinder wasn't correctly calibrated, how would it affect the results of a measurement? How would it affect the results of a calculation? Which one of the following is the true covalent oxide of iodine?
Where did Stephanie Kwolek live? Did Ellen Swallow Richards have children?
True or false? Chemistry is the study of the composition, structure, and properties of substances. Using a single reagent, how could you distinguish between the following pairs of substances contained in separate test tubes?
Chemical Equilibrium MCQ - Multiple Choice Question and Answer
Give the net ionic equation for each test. Why would you use weighing paper instead of filter paper for weighing an unknown sample? What do those in the field of chemistry study? Name the five major divisions of chemistry. If a salad dressing is poured on a salad, what kind of mixture results? Assuming 3.There are two fundamental kinds of equilibrium problems: 1 those in which we are given the concentrations of the reactants and the products at equilibrium or, more often, information that allows us to calculate these concentrationsand we are asked to calculate the equilibrium constant for the reaction; and 2 those in which we are given the equilibrium constant and the initial concentrations of reactants, and we are asked to calculate the concentration of one or more substances at equilibrium.
In this section, we describe methods for solving both kinds of problems. We saw in the exercise in Example 6 in Section Remember that equilibrium constants are unitless. A more complex example of this type of problem is the conversion of n -butane, an additive used to increase the volatility of gasoline, to isobutane 2-methylpropane. This reaction can be written as follows:. At equilibrium, a mixture of n -butane and isobutane at room temperature was found to contain 0. Substituting these concentrations into the equilibrium constant expression.
Thus the equilibrium constant for the reaction as written is 2. The reaction between gaseous sulfur dioxide and oxygen is a key step in the industrial synthesis of sulfuric acid:. A mixture of SO 2 and O 2 was maintained at K until the system reached equilibrium. The equilibrium mixture contained 5. Calculate K and K p at this temperature.
Given: balanced equilibrium equation and composition of equilibrium mixture. Asked for: equilibrium constant. Write the equilibrium constant expression for the reaction. Then substitute the appropriate equilibrium concentrations into this equation to obtain K. Substituting the appropriate equilibrium concentrations into the equilibrium constant expression.
To solve for K pwe use Equation Hydrogen gas and iodine react to form hydrogen iodide via the reaction. A mixture of H 2 and I 2 was maintained at K until the system reached equilibrium. The equilibrium mixture contained 1. Calculate K and K p for this reaction. Chemists are not often given the concentrations of all the substances, and they are not likely to measure the equilibrium concentrations of all the relevant substances for a particular system.
In such cases, we can obtain the equilibrium concentrations from the initial concentrations of the reactants and the balanced chemical equation for the reaction, as long as the equilibrium concentration of one of the substances is known. Example 9 shows one way to do this.
The contents of the reactor were then analyzed and found to contain 0. Calculate K at this temperature. Given: balanced equilibrium equation, amount of reactant, volume, and amount of one product at equilibrium. Asked for: K. A Write the equilibrium constant expression for the reaction. Construct a table showing the initial concentrations, the changes in concentrations, and the final concentrations as initial concentrations plus changes in concentrations.This is a collection of chemistry worksheets in pdf format.
The answers to the questions are available on separate worksheets so you can fill them out and then check your work. Please feel free to download these to your computer, print them, and use them as hand-outs. Also available is a PDF of a pie chart of the elemental composition of the human body. Share Flipboard Email. Anne Marie Helmenstine, Ph. Chemistry Expert. Helmenstine holds a Ph. She has taught science courses at the high school, college, and graduate levels.
Facebook Facebook Twitter Twitter. Here are some printable periodic tables to help you out, also in pdf format. Color Printable Periodic Table - Pretty much everything you need that can fit on a page and still be readable. Color table with atomic numbers, element symbols, element names, atomic weights, periods, and groups.
Electron Configuration Periodic Table - Periodic table that lists the electron configurations for each element. Color Printable Periodic Table - Color table with atomic numbers, element symbols, atomic weights, periods, and groups. This is a flow chart of the steps of the scientific method, available as a PDF file:. Scientific Method PDF.Keq of eq. Calculate the pH at the equivalence point of the titration between 0. We can assume that the reaction is complete and then salt gets hydrolysed because, this assumption will help us to do the problem easily and it does not effect our answer.
For reaching equivalence point. To what volume must one litre of this solution be diluted so that the pH of resulting solution will be twice the original value. How much AgBr could dissolve in 1. Equal volumes of 0. Given that:. Calculate the solubility of MnS in pure water. Let molar solubility of MnS be XM. Calculate the maximum concentration of iodide ion at which one of them gets precipitated almost completely.
What percentage of that metal ion is precipitated? Therefore, Ag I will start precipitating first. This is the maximum value of [S —2 ] before ZnS will precipitate. Let is the maximum value of [S —2 ] be x. Assuming the complete dissociation of HCl and the lead salt, calculate how much HCl is added to 0. The concentration of H 2 S in its saturated solution is 0. Also browse for more study materials on Chemistry here.
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Important Questions for CBSE Class 11 Chemistry Chapter 7 - Equilibrium
Explore over 4, video courses. Find a degree that fits your goals. Related Content. Chemical Equilibrium Questions and Answers Test your understanding with practice problems and step-by-step solutions. View Answer. A What is the resulting pH? After adding Equilibrium constant K for some reaction at temperature K was found to be Calculate equilibrium for same reaction at K. Suppose Calculate the final molarity of bromide anion in the solution.
You can assume the volume of t Which condition would result in the production of additional water vapor? I Adding more carbon A solution is prepared by mixing Assume that volumes are additive. How will the following system at equilibrium shift in each of the following cases? What is the relationship between temperature and the equilibrium constant k? Is it a direct or indirect relationship? And why? Which of the following is TRUE for a system that is in dynamic equilibrium?
B The concentration of products is equal to the concentration of the re The following table gives the equilibrium constant for the reaction at various temperatures.
A solution is made by mixing 5. The data below represents points of a titration curve similar to the one that you made in the lab in the data table below: a.
Start with mL of 0. What species are present and how many When a system is in a state of chemical equilibrium, a state of apparent rest, is anything going on at the molecular or ionic level? Which way is it going to shift? Calculate the pH of a 4. Summarize the physical properties of ionic compounds, nonpolar covalent compounds, polar covalent compounds, and covalent solids.
Explain why the yield of ester is relatively low?Register online for Chemistry tuition on Vedantu. Do you need help with your Homework? Are you preparing for Exams? Study without Internet Offline. Download pdf for free! Loading More Solutions Get this solution now! Download our free PDF or App.
Chemical Equilibrium Important Questions And Answers
Get Solution now! Chapter 1 - Some Basic Concepts of Chemistry. Chapter 2 - Structure of Atom. Chapter 3 - Classification of Elements and Periodicity in Properties. Chapter 4 - Chemical Bonding and Molecular Structure. Chapter 5 - States of Matter. Chapter 6 - Thermodynamics. Chapter 8 - Redox Reactions. Chapter 9 - Hydrogen.Equilibrium: Crash Course Chemistry #28
Chapter 10 - The s-Block Elements. Chapter 11 - The p-Block Elements. Chapter 13 - Hydrocarbons. Chapter 14 - Environmental Chemistry. RD-Sharma Solutions. RS-Aggarwal Solutions.