The relationship between first ionization energy of an anion and electron affinity of the parent atom has to be given. Concept-Introduction: Electron affinity: In a gaseous state of an isolated neutral atom, energy released when an electron is introduced in outermost shell is known as electron affinity. It is the difference in energy between a neutral atom and its anion. Greater the negative value of electron affinity, the atom has more tendency to accept an electron. Ionization energy: In a gaseous state of an isolated neutral atom, the amount of energy required to eject an electron from outermost shell is known as ionization energy. Ionization energy increases from left to right across periods due to increase of effective nuclear charge. Ionization energy decreases down the group due to addition of electrons enters into new orbital which is far from nucleus.

Question

43) 10.00 ml of vinegar (active ingredient is acetic acid) is titrated to the endpoint using 19.32 ml of 0.250 M sodium hydroxide. What is the molarity of acetic acid in the vinegar? YOU MUST SHOW YOUR WORK. NOTE: MA x VA = MB x VB

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Chapter 8, Problem 8C.2ST

Interpretation Introduction

Interpretation:

The relationship between first ionization energy of an anion and electron affinity of the parent atom has to be given.

Concept-Introduction:

Electron affinity:

In a gaseous state of an isolated neutral atom, energy released when an electron is introduced in outermost shell is known as electron affinity. It is the difference in energy between a neutral atom and its anion. Greater the negative value of electron affinity, the atom has more tendency to accept an electron.

Ionization energy:

In a gaseous state of an isolated neutral atom, the amount of energy required to eject an electron from outermost shell is known as ionization energy. Ionization energy increases from left to right across periods due to increase of effective nuclear charge. Ionization energy decreases down the group due to addition of electrons enters into new orbital which is far from nucleus.

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43) 10.00 ml of vinegar (active ingredient is acetic acid) is titrated to the endpoint using 19.32 ml of 0.250 M sodium hydroxide. What is the molarity of acetic acid in the vinegar? YOU MUST SHOW YOUR WORK. NOTE: MA x VA = MB x VB

424 Repon Sheet Rates of Chemical Reactions : Rate and Order of 1,0, Deception B. Effect of Temperature BATH TEMPERATURE 35'c Yol of Oh نام Time 485 Buret rend ing(n) 12 194 16. 6 18 20 10 22 24 14 115 95 14738 2158235 8:26 CMS 40148 Total volume of 0, collected Barometric pressure 770-572 ml mm Hg Vapor pressure of water at bath temperature (see Appendix L) 42.2 Slope Compared with the rate found for solution 1, there is Using the ideal gas law, calculate the moles of O; collected (show calculations) times faster 10 Based on the moles of O, evolved, calculate the molar concentration of the original 3% 1,0, solution (sho calculations)

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