Chemical reaction rates slow down as the temperature is decreased. This is why we put food...
Chemical reaction rates slow down as the temperature is decreased. This is why we put food in the refrigerator to preserve it. By thinking about matter on the microscopic (molecule) level explain why this happens
Homework Answers
As the temperature is decreased the molecular motion slows down and also the rate of multiplication of bacteria and other microorganisms present inside the food is slow down.
Apart from this the rate of diffusion of several impurities are microorganisms decreases due to the decreased temperature.
All these factors contribute to the preservation of food at microscopic level, when kept in refrigerator
Add Answer to:
Chemical reaction rates slow down as the temperature is
decreased. This is why we put food...
1. which of the factors that affect chemical reaction rates explains why milk spoils slower when...
1. which of the factors that affect chemical reaction rates explains why milk spoils slower when stored in the refrigerator? a. ctalyst b. temperature c. Concentration d. Surface area 2, The arte of a chemical increases with increasing concentrations of reactants because reactant molecules move faster when they are more concentrated a. True b. False
the following factors can slow down a chemical reaction. A) adding catalyst B) lowering concentration C)...
the following factors can slow down a chemical reaction. A) adding catalyst B) lowering concentration C) increasing concentration D)increasing temperature E) none
1. Utilize your knowledge of reaction rates, collision theory and activation energy to explain why we...
1. Utilize your knowledge of reaction rates, collision theory and activation energy to explain why we keep most foods in the refrigerator?
1. When a reaction system reaches chemical equilibrium......... a. What happens to the rates of the...
1. When a reaction system reaches chemical equilibrium......... a. What happens to the rates of the forward and reverse reactions? b. What happens to the amounts of reactants and products? 2. For the exothermic reversible reaction below at equilibrium: 2 H2(g)+O2(g) <--> 2 H2O(g) a. How would the amount of O2 change when H2 is added to the reaction mixture? b. How would the amount of H2 change when H2O is added to the reaction mixture? c. How would the...
Why the magnet slow down when we thrown it inside hollow cylindrical copper? Explain and sketch
Why the magnet slow down when we thrown it inside hollow cylindrical copper? Explain and sketch
We leam chemical reactions and spectroscopic techniques so that we can put them to use in...
We leam chemical reactions and spectroscopic techniques so that we can put them to use in solving problems. Chemists routinely acquire information about molecular structure so that they know with which molecule they are working. For example, a chemist runs a reaction and needs to find out whether the material he or she isolated at the end of the reaction is starting material or product. For the pairs of compounds that follow, propose simple (chemical or spectroscopic) laboratory tests that...
Kinetics Broadly speaking, the factors that influence chemical reaction rates may be summarised as follows. Chemical...
Kinetics Broadly speaking, the factors that influence chemical reaction rates may be summarised as follows. Chemical nature of reactants (Is the chemical reaction thermodynamically "downhill so that it can occur spontaneously at all?) Reactant Concentration (or pressure for a gas) Physical state of reactants (e.g. phase, or surface area of solids) Presence of catalyst Temperature 012 For each offervations, identify which one these five factors is most important, and briefly explain how/why that is the case. (a) The ability to...
Unit 2: Chemical Kinetics Assignment 1. Explain why the rate of a chemical reaction increases as...
Unit 2: Chemical Kinetics Assignment 1. Explain why the rate of a chemical reaction increases as the concentration of the reactants increases 2. Consider two gases A and B in a container at room temperature. What effect will the following changes have on the reaction rate between these gases (increase, decrease, no a) The pressure is increased. b) The number of molecules of gas A is doubled c) The temperature is decreased 3. Which of the following reactions will have...
Reaction Rates and Chemical Equilibrim 09 In test tube 2, did the equilibrium shift in the direct...
Reaction Rates and Chemical Equilibrim 09 In test tube 2, did the equilibrium shift in the direction of products or reactants? Explain. 010 In test tube 3, what is the evidence that the shift in equilibrium was in the direc- tion of products? 011 In test tube 4, what is the evidence that the shift in equilibrium was in the direc- tion of reactants? C.2 Effect of Temperature Test tube Color Temperature Color is deeper or [FeSCN (increased or lighter...
I’m part a what do I put in fx= to execute the function A chemical reaction...
I’m part a what do I put in fx= to execute the function
A chemical reaction is being carried out in a well-stirred tank. The concen- tration of the substance being created can be calculated as a function of time using the formula 59 where C is the concentration in moles per liter and t is the time in seconds. (a) Construct a table of concentration versus time within an Excel work- sheet for the case where a 8 mole/L...
1. Utilize your knowledge of reaction rates, collision theory and activation energy to explain why we keep most foods in the refrigerator?
We leam chemical reactions and spectroscopic techniques so that we can put them to use in solving problems. Chemists routinely acquire information about molecular structure so that they know with which molecule they are working. For example, a chemist runs a reaction and needs to find out whether the material he or she isolated at the end of the reaction is starting material or product. For the pairs of compounds that follow, propose simple (chemical or spectroscopic) laboratory tests that...
Kinetics Broadly speaking, the factors that influence chemical reaction rates may be summarised as follows. Chemical nature of reactants (Is the chemical reaction thermodynamically "downhill so that it can occur spontaneously at all?) Reactant Concentration (or pressure for a gas) Physical state of reactants (e.g. phase, or surface area of solids) Presence of catalyst Temperature 012 For each offervations, identify which one these five factors is most important, and briefly explain how/why that is the case. (a) The ability to...
Unit 2: Chemical Kinetics Assignment 1. Explain why the rate of a chemical reaction increases as the concentration of the reactants increases 2. Consider two gases A and B in a container at room temperature. What effect will the following changes have on the reaction rate between these gases (increase, decrease, no a) The pressure is increased. b) The number of molecules of gas A is doubled c) The temperature is decreased 3. Which of the following reactions will have...
Reaction Rates and Chemical Equilibrim 09 In test tube 2, did the equilibrium shift in the direction of products or reactants? Explain. 010 In test tube 3, what is the evidence that the shift in equilibrium was in the direc- tion of products? 011 In test tube 4, what is the evidence that the shift in equilibrium was in the direc- tion of reactants? C.2 Effect of Temperature Test tube Color Temperature Color is deeper or [FeSCN (increased or lighter...
I’m part a what do I put in fx= to execute the function
A chemical reaction is being carried out in a well-stirred tank. The concen- tration of the substance being created can be calculated as a function of time using the formula 59 where C is the concentration in moles per liter and t is the time in seconds. (a) Construct a table of concentration versus time within an Excel work- sheet for the case where a 8 mole/L...
Most questions answered within 3 hours.
-
Protons in cosmic rays have been observed with kinetic energies
as large as 1.0×1020eV.
How fast...
asked 58 minutes ago -
How do you explain that it is not fair for teachers to verbally
abuse you over...
asked 57 minutes ago -
Ang Electronics, Inc., has developed a new HD DVD. If the HD DVD
is successful, the...
asked 1 hour ago -
which of these substances cannot behave as a lewis base in an aq
solution
a- Co...
asked 1 hour ago -
Below are some of Toyota’s (an automotive manufacturer) costs to
manufacture a car: I. Depreciation of...
asked 1 hour ago -
A random sample of 40 cups of coffee from a vending machine had
a sample mean...
asked 2 hours ago -
The mercury in a fish sample is determined to be 1.80, 1.58 and
1.64 ppm. Calculate...
asked 1 hour ago -
Suppose a photon is equally likely to be found anywhere in an
interval of 28.5 cm...
asked 2 hours ago -
Suppose the following is a divide-and-conquer algorithm for some
problem.
"Make the input of size n...
asked 2 hours ago -
Calculate the pH of the resulting solution if 15.0 mL of 0.150 M
HCl(aq) is added...
asked 2 hours ago -
How many moles of sulphur hexaflouride are present in 3.64 x 10^21
molecules of this compound?
asked 2 hours ago -
155 grams of ice at -10.0 degrees celsius is added to 1.17 kg of
water at...
asked 2 hours ago