menu
bartleby
search
close search
Hit Return to see all results

Drug X has an expiration date that is 1.5 years after the date it was manufactured. Drug X decomposes following the reaction below. Assume the decomposition follows first order kinetics.                               X ---->  Y +  2 Z1) A bottle contains pills of X that were manufactured 5.00 years ago. The drug is analyzed and it is found that 95.0% of X has not decomposed. What is the half life for the dceomposition of X in years? 2) One of the pills contains 10.0 mg of X. The molecular weight of X is 245 g/mol and the molecular weight of Z is 100g/mol. How many years will it take for enough X to decompose so as to produce 2.8 mg of Z?

Question

Drug X has an expiration date that is 1.5 years after the date it was manufactured. Drug X decomposes following the reaction below. Assume the decomposition follows first order kinetics. 

                              X ---->  Y +  2 Z

1) A bottle contains pills of X that were manufactured 5.00 years ago. The drug is analyzed and it is found that 95.0% of X has not decomposed. What is the half life for the dceomposition of X in years? 

2) One of the pills contains 10.0 mg of X. The molecular weight of X is 245 g/mol and the molecular weight of Z is 100g/mol. How many years will it take for enough X to decompose so as to produce 2.8 mg of Z?

check_circleAnswer
Step 1

Integral equation for first order of reaction:

  • For first order reaction:

                                                              

fullscreen
Step 2

Rate constant remains constant throughout the reaction and a reaction having certain order must satisfy the integral equation of that order.

According to question:

Drug decomposition follows first order kinetics

Initial concentration of drug = let it ‘a’ M

% of drug left after decomposition in 5.00 years = 95%

Thus,

fullscreen
Step 3

Plugging value in integral equation...

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Our solutions are written by experts, many with advanced degrees, and available 24/7

See Solution
Tagged in

Science

Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you

Show more Q&A add
question_answer

Q: Provide the structure of the major organic product in the reaction shown below. 5. Br 1. Mg, Et20 2....

A: Grignard Reaction is an organometallic reaction in which different alkyl, aryl-magnesium halides add...

question_answer

Q: Do more complicated equations, such as NOCl2+NO->2NOCl have smaller orientation factors or do sim...

A: In complicated equation, such as the equation given below, the possible ways that the NO atom collid...

question_answer

Q: LA A #7 a) Briefly describe how you can tell which layer is the aqueous Phase after perform ain exth...

A: You can't tell just by looking at it, you need to know the density of the extraction solvent. If it ...

question_answer

Q: The flask shown here contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret...

A: In this problem, the volume of sodium hydroxide can be calculated only when the initial concentratio...

question_answer

Q: An alloy is found to be 41.8% Zn and the rest is Cu. If 15.0 g of Cu is added to 45.0 g of This allo...

A: Mass of the alloy = 45g% of copper in the alloy = (100-41.8) = 58.2%% of zinc in the alloy = 41.8%Th...

question_answer

Q: Why will nuclear fission probably not be used directly for powering automobiles? a. It's more practi...

A: Nuclear fission - It is a nuclear reaction in which the nucleus of  radioactive  atom splits into sm...

question_answer

Q: Consider the reaction:2HBr(g)H2(g)+ Br2(l)Using standard thermodynamic data at 298K, calculate the f...

A: Using standard thermodynamic data at 298K, the standard Gibbs free energy of formation of the produc...

question_answer

Q: A mixture is made up of 4 molecules of CH3CH2  CH2OH and 5 formula units of Pb3(PO4)4 * 6H2O. Why ar...

A: A molecule is composed of two or more elements that are covalently bonded with each other.Whereas a ...

question_answer

Q: Sort the following substances as pure solids, pure liquids, and solutions. Can you also explain the ...

A: Compound (A) Brass:Alloys in general may be solid solutions or they simply be mixtures. Whether bras...

Sorry about that. What wasn’t helpful?