b) A carbonate of metal X has the formular X,CO3. The carbonate reacts with hydrochloric acid according to thefollowing equation:X,CO3 + 2HC! →0.25g of X,CO3 was found to neutralize exactly 23.6cm³ of hydrochloric acid of concentration 0.15moldm?( RAM for C=12;0=16)i) Calculate the number of moles of hydrochloric acid2XCl +CO2 +H,0ii) Calculate the number of moles of X,CO3iii) Calculate the relative molecular mass of X,CO3iv) Calculate the relative atomic mass of X and hence deduce its identityc) Propanoic acid is a weak acid with an acid dissociation constant of 1.22x 10°moldmi) Write an equation for the ionization of propanoic acid-3ii) Calculate the pKa for propanoic acidLoiii) Sodium propanoate is made by the titration using 0.1M sodium hydroxide with propanoic acidA: Write an equation for the reactionB: Name a suitable indicator for this titrationiv) A mixture of sodium propanoate and propanoic acid acts as a buffer solution. What is a buffer solution?

The answer to the first three questions are given as:

b) A carbonate of metal X has the formular X,CO.. The carbonate reacts with hydrochloric acid according to the following equation: X, C03 + 2HCI 0.25g of X,CO; was found to neutralize exactly 23.6cm of hydrochloric acid of concentration 0.15moldm ( RAM for C=12;0=16) i) Calculate the number of moles of hydrochloric acid 2XCl + CO2 +H20 ii) Calculate the number of moles of X,CO; iii) Calculate the relative molecular mass of X,CO3

b) A carbonate of metal X has the formular X,CO.. The carbonate reacts with hydrochloric acid according to the following equation: X, C03 + 2HCI 0.25g of X,CO; was found to neutralize exactly 23.6cm of hydrochloric acid of concentration 0.15moldm ( RAM for C=12;0=16) i) Calculate the number of moles of hydrochloric acid 2XCl + CO2 +H20 ii) Calculate the number of moles of X,CO; iii) Calculate the relative molecular mass of X,CO3

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

b) A carbonate of metal X has the formular X,CO3. The carbonate reacts with hydrochloric acid according to the
following equation:
X,CO3 + 2HC! →
0.25g of X,CO3 was found to neutralize exactly 23.6cm³ of hydrochloric acid of concentration 0.15moldm?
( RAM for C=12;0=16)
i) Calculate the number of moles of hydrochloric acid
2XCl +
CO2 +H,0
ii) Calculate the number of moles of X,CO3
iii) Calculate the relative molecular mass of X,CO3
iv) Calculate the relative atomic mass of X and hence deduce its identity
c) Propanoic acid is a weak acid with an acid dissociation constant of 1.22x 10°moldm
i) Write an equation for the ionization of propanoic acid
-3
ii) Calculate the pKa for propanoic acid
Lo
iii) Sodium propanoate is made by the titration using 0.1M sodium hydroxide with propanoic acid
A: Write an equation for the reaction
B: Name a suitable indicator for this titration
iv) A mixture of sodium propanoate and propanoic acid acts as a buffer solution. What is a buffer solution?

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