Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. chemistry
  3. how to calculate the weight percent na2co3 in impu

How to calculate the weight percent Na2CO3 in impure base sample??? I did my calculations but it somehow...

70.2K

Verified Solution

Question

Chemistry

How to calculate the weightpercent Na2CO3 in impure base sample???

I did my calculations but itsomehow doesnt make sense

First we find the moles of HCl

=0.1M HCl x volume of HCl used to titrate

       =0.1M x 10.5mL HCl

       =1.05 mol HCl

The ratio between Na2CO3 and Hcl is 1:2

Moles Na2CO3

= moles of HCl/2

=1.05mol HCl/2

=0.525mol Na2CO3

Mass Na2CO3

= moles of Na2CO3 x 105.9906 g/mol

       =0.525 mol Na2CO3 x105.9906 g/mol

       =55.65 g

%    = mass of Na2CO3 x100/mass of sample fromthe impure solid

       =55.65g x 100/ 0.1328g =41905.1205 ???

What did I do wrong??? (do I need to include the fact that thatthe impure base was first mixed with 25 mL of distilled water???The HCl used is 0.1M for titrate to its endpoint)

Impure base

1

Mass (g)

0.1328

Trial 1 volume of HCl used in titration (mL)

10.5

Trial 2 /2nd titration(after boiling) : volume of HCl used intitration (mL)

3

Answer & Explanation Solved by verified expert
3.6 Ratings (390 Votes)
    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Zin AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

Friends 129 349 51 50 273 361 110 108 99 27 45 243 122 196 63 134 95 162 179 739 203 84 172 104 293 61 38 64 75 88 116 95 123 71 94 38 9 226 73 69 203 155 40 56 27 62 11 5 Create a histogram using Excel’s Data Analysis toolpack for Friends. Use the Sturges’ rule to find...

Statistics
Q

The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.65....

Chemistry
Q

Develop a python program to ask the user to take up the quiz(General knowledge) which has...

Programming
Q

hand me the bag by which time I ve switched the conversation to another topic...

Biology
Q

Physics Question No 27 Question Palette Two particles undergo SHM along parallel lines with same...

Physics
Q

Which number is NOT a solution for x 5 15

Basic Math
Q

Finding the Domain and Range of a Graph Determine the Domain and Range for the...

Basic Math
Q

A 3 Reasoning and Proof Write the converse inverse and contrapositive of the statement below...

Algebra
Q

Montclair Company is considering a project that will require a $580,000 loan. It presently has...

Accounting
Q

Quick Fix-It Corporation was organized at the beginning of this year to operate several car...

Accounting
Q

Presented below is the adjusted trial balance of Culver Corporation at December 31,2025. Additional...

Accounting
Q

Suppose Smith Corp has the following weights and costs. What is the WACC if the...

Finance