Question
Asked Aug 30, 2019
316 views

Tartaric acid is the white, powdery substance that coats tart candies such as Sour Patch Kids. COmbustion analysis of a 12.01g sample of tartaric aid, which contains carbon, hydrogen and oxygen, produces 14.08g CO2 and 4.32g H2O. Determine the empirical formula of the acid. 

check_circle

Expert Answer

Step 1

Empirical formula:the simplest positive integer ratio of atoms that is present in a compound is called the empirical formula of that compound.

the empirical formula can be calculated as follows:

Step 2

first find moles of carbon dioxide and then find the mass of carbon as follows:

mass of carbon dioxide=14.01gram

molar mass of carbon dioxide=44.01gram/mol

substitute these values in the above equation (1),

mass of  carbon=0.3183mol×12.011g-mol-1

                         =3.824g

now find moles of water and then the mass of hydrogen as follows:

mass of water=4.32g

the molar mass of water=18.01g-mol-1

substitute these values in the above equation (2)

help_outline

Image Transcriptionclose

mass of CO moles of CO2 molar mass of CO, ..(1) 14.01g 2 44.01g/mo moles of CO -0.3183mol mass of water moles of watermolar mass of water"--(2) 4.32g moles of water18.01g/mol 0.2399mol mass of hydrogen=2x0.2399molx1.00794g/mo 0.4835g

fullscreen
Step 3

mass of tartaric acid is given=12.01g

therefore the mass of oxygen can be calculated as

mass of oxygen=massof tartaric acid-(mass of carbon + mass of hydrogen)

mass of oxygen=12.01g-(3.824g + 0.4835g)

          ...

help_outline

Image Transcriptionclose

mass of oxygen moles of oxygen=molar mass of oxygen*-(3) 7.702g moles of oxygen 16.00g/mol 0.4814mol

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
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: The proposed mechanism for a reaction is NO + O3 => NO3 + O      Fast NO3 + O => NO2 + O2     ...

A: Click to see the answer

question_answer

Q: when acid is added to the blood buffer sytem what reacts with what to neutralize it

A: The blood buffer system contains dissolved carbon dioxide in the plasma.

question_answer

Q: You measure 48.0 mL of a solution of sulfuric acid with an unknown concentration, and carefully titr...

A: Moles of KOH can be calculated as:

question_answer

Q: Charlotte is driving at 66.4mi/h and receives a text message. She looks at her phone and takes her e...

A: Given,Speed = 66.4 mi/h Time = 4.30 secsConversion of seconds to hours:

question_answer

Q: Iodine – 125 emits gamma rays when it decays to Tellerium-125 and has a half-life of 60 days. If a 0...

A: The radioactive decay always follows the first order kinetics. The radioactive decay of I-125 must b...

question_answer

Q: An adult eats food whose nutritional energy totals approximately 2200 Cal per day. The adult burns 2...

A: The excess nutritional energy consumed per day is determined as follows,

question_answer

Q: How many grams of methanol (CH3OH, FM 32.04) are contained in 0.440 L of 1.63 M aqueous methanol (i....

A: Step 1-We have to calculate the mass of methanol in grams that are contained in 0.440 L of 1.63 M aq...

question_answer

Q: Decide whether each pair of elements in the table below will form an ionic compound. If they will, w...

A: Click to see the answer

question_answer

Q: How many 100 mg tablets can be produced from 100 kg of a pharmaceutical product?

A: 100 kg of pharmaceutical product is equal to 10^8  mg pharmaceutical product .  So number of 100 mg ...