The condensed structurehas to be drawn for the molecular formula of C 4 H 8 O with a carbonyl group (there are two aldehydes and one ketone ). Concept introduction: Functional group : They are certain substitutes in the organic molecules which are determine the characteristic reactions taking place in it. Carbonyl group: A carbon atom is double-bonded to an oxygen atom ( C = O ) is called as carbonyl group which is one of the functional group. If the carbonyl carbon is attached with two alkyl or aryl group is called as ketone, if the carbonyl carbon is attached with one hydrogen atom and one alkyl or aryl group is called as aldehyde.

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alt ons for Free Response Questions FRQ 1: 0/5 To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and some inert materials, solutions with known [Co?) are prepared and absorbance of each of the solutions is measured at the wavelength of optimum absorbance. The data are used to create a calibration plot, shown below. 0.90- 0.80- 0.70 0.60 0.50 0.40- 0.30 0.20- 0.10- 0.00- 0.005 0.010 Concentration (M) 0.015 A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted with water to a final volume of 50.00 ml. Assume that all the cobalt in the ore sample is converted to Co2+(aq). a. What is the [Co2] in the solution if the absorbance of a sample of the solution is 0.74? 13 ✗ b. Calculate the number of moles of Co2+(aq) in the 50.00 mL solution. 0.008 mols Co

Answer 1

Question

Chapter 1, Problem 1.42P

(a)

Interpretation Introduction

Interpretation:

The condensed structurehas to be drawn for the molecular formula of C4H8O with a carbonyl group (there are two aldehydes and one ketone).

Concept introduction:

Functional group: They are certain substitutes in the organic molecules which are determine the characteristic reactions taking place in it.

Carbonyl group:

A carbon atom is double-bonded to an oxygen atom (C=O) is called as carbonyl group which is one of the functional group.

If the carbonyl carbon is attached with two alkyl or aryl group is called as ketone, if the carbonyl carbon is attached with one hydrogen atom and one alkyl or aryl group is called as aldehyde.

(b)

Interpretation Introduction

Interpretation:

The condensed structure has to be drawn for the molecular formula of C4H8O with a carbon-carbon double bond and a hydroxyl group (there are eight).

Concept introduction:

Functional group: They are certain substitutes in the organic molecules which are determine the characteristic reactions taking place in it.

Hydroxyl group:

Alcohol:

The compound contains hydroxyl (OH) group, which is bonded with tetrahedral carbon atom is called as an alcohol.

Example is given below,

Alkenes:

Alkenes are a class of hydrocarbons. The carbon-carbon double bond is called as alkenes and it is also called as olefins.

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alt ons for Free Response Questions FRQ 1: 0/5 To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and some inert materials, solutions with known [Co?) are prepared and absorbance of each of the solutions is measured at the wavelength of optimum absorbance. The data are used to create a calibration plot, shown below. 0.90- 0.80- 0.70 0.60 0.50 0.40- 0.30 0.20- 0.10- 0.00- 0.005 0.010 Concentration (M) 0.015 A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted with water to a final volume of 50.00 ml. Assume that all the cobalt in the ore sample is converted to Co2+(aq). a. What is the [Co2] in the solution if the absorbance of a sample of the solution is 0.74? 13 ✗ b. Calculate the number of moles of Co2+(aq) in the 50.00 mL solution. 0.008 mols Co

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