Chemistry, asked by shruti4918, 11 months ago

Maximum number of O atom are present in
(1) 2 g molecule of glucose
(2) 2 g molecule of acetone
(3) 2 g molecule of ethanol
(4) 2 g molecule of sucrose

Answers

Answered by vivo1726
4

sucrose.... option (4)..........


shruti4918: could you please tell me the whole solution
Answered by CarlynBronk
0

The maximum number of atoms are present in 2 grams of glucose that are 3.97\times 10^{22}

Explanation:

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}     .....(1)

According to mole concept:

1 mole of an element contains 6.022\times 10^{23} number of atoms

For the given options:

  • For A: 2 g of glucose

The chemical formula of glucose is C_6H_{12}O_6

1 mole of glucose contains 6 moles of carbon atom, 12 moles of hydrogen atom and 6 moles of oxygen atom.

Given mass of glucose = 2 g

Molar mass of glucose = 180 g/mol

Putting values in equation 1, we get:

\text{Moles of glucose}=\frac{2g}{180g/mol}=0.011mol

Number of O atoms = (6\times 0.011\times 6.022\times 10^{23})=3.97\times 10^{22}

  • For B: 2 g of acetone

The chemical formula of acetone is C_3H_{6}O

1 mole of acetone contains 3 moles of carbon atom, 6 moles of hydrogen atom and 1 mole of oxygen atom.

Given mass of acetone = 2 g

Molar mass of acetone = 58 g/mol

Putting values in equation 1, we get:

\text{Moles of acetone}=\frac{2g}{58g/mol}=0.0345mol

Number of O atoms = (1\times 0.0345\times 6.022\times 10^{23})=2.077\times 10^{22}

  • For C: 2 g of ethanol

The chemical formula of ethanol is C_2H_{5}OH

1 mole of ethanol contains 2 moles of carbon atom, 6 moles of hydrogen atom and 1 mole of oxygen atom.

Given mass of ethanol = 2 g

Molar mass of ethanol = 46 g/mol

Putting values in equation 1, we get:

\text{Moles of ethanol}=\frac{2g}{46g/mol}=0.0435mol

Number of O atoms = (1\times 0.0435\times 6.022\times 10^{23})=2.62\times 10^{22}

  • For D: 2 g of Sucrose

The chemical formula of sucrose is C_{12}H_{22}O_{11}

1 mole of ethanol contains 2 moles of carbon atom, 6 moles of hydrogen atom and 1 mole of oxygen atom.

Given mass of sucrose = 2 g

Molar mass of sucrose = 342 g/mol

Putting values in equation 1, we get:

\text{Moles of sucrose}=\frac{2g}{342g/mol}=0.0058mol

Number of O atoms = (11\times 0.0058\times 6.022\times 10^{23})=3.84\times 10^{22}

Learn more about mole concept:

https://brainly.in/question/11303726

https://brainly.in/question/2900456

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