Q37P Determination of sulfur by combu... [FREE SOLUTION]

Chapter 27: Q37P (page 769)

Determination of sulfur by combustion analysis produces a mixture of ${SO}_{2}$ and ${SO}_{3}$ that can be passed through $H_{2} O_{2}$ to convert both into $H_{2} {SO}_{4}$ , which is titrated with standard base. When 6.123m g of a substance were burned, the $H_{2} {SO}_{4}$ required 3.01mL of0.010576MNaOHfor titration. Find wt% sulfur in the sample.

Short Answer

Expert verified

The weight percent of sulfur in the sample is 0.124 .

Step by step solution

Derfining the weight percent.

The Weight Percentage is simply the ratio of a solute's mass to the mass of a solution multiplied by 100. The Weight Percentageis also referred to as the Mass Percentage.

$Percentbyweight = \frac{gram of solute}{100 g of solution}$ $Percentbyweight = \frac{gram of solute}{100 g of solution}$

Determining the moles of NaOH and H2So$

Here of were required for titration of when of a substance were burned. We need to find the weight percent of sulfur in the sample.

Consider the following reaction:

$H_{2} {SO}_{4} + 2 NaOH 鈫� 2 H_{2} O + {Na}_{2} {SO}_{4} n (NaOH) = c 脳 V n (NaOH) = 0.01576 M 脳 3.01 脳 10^{- 3} L n (NaOH) = 4.744 脳 10^{- 5} mol n (H_{2} {SO}_{4}) = 2.372 脳 10^{- 5} mol$

Calculating the weight percent.

Then we will find the weight percent of sulfur in the sample:

$wt % = \frac{m (S)}{m (sample)} wt % = \frac{0.7607 mg}{6.123 mg} wt % = 0.124$

Therefore the weight percent of sulfur in the sample is 0.124 .

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Recommended explanations on Chemistry Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

91影视

Short Answer

Step by step solution

Derfining the weight percent.

Determining the moles of NaOH and H2So$

Calculating the weight percent.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

The Earths Atmosphere

Making Measurements

Physical Chemistry

Chemistry Branches

Inorganic Chemistry

Nuclear Chemistry

Study anywhere. Anytime. Across all devices.