1 / 19

4.3- Molar Volume of Gases

4.3- Molar Volume of Gases. Mole. measurement of the number of particles in a sample 1 mol He (g) = 6.02 x 10 23 atoms 1 mol CO 2(g) = 6.02 x 10 23 molecules. Molar Volume . the volume of one mole of a gas at specified temperature and pressure SATP = 24.8 L/mol STP = 22.4 L/mol.

habib
Download Presentation

4.3- Molar Volume of Gases

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 4.3- Molar Volume of Gases

  2. Mole • measurement of the number of particles in a sample • 1 mol He (g) = 6.02 x 1023 atoms • 1 mol CO2(g) = 6.02 x 1023 molecules

  3. Molar Volume • the volume of one mole of a gas at specified temperature and pressure • SATP = 24.8 L/mol • STP = 22.4 L/mol

  4. Molar Volume Calculation • use the formula:

  5. Molar Volume Calculation • use the formula: V=v/n

  6. Molar Volume Calculation • use the formula: Molar Volume (L/mol) V=v/n

  7. Molar Volume Calculation • use the formula: V=v/n Molar Volume (L/mol) Volume (L)

  8. Molar Volume Calculation • use the formula: V=v/n # of moles (mol) Molar Volume (L/mol) Volume (L)

  9. Molar Volume Question What volume is occupied by 0.024 mol of carbon dioxide gas at SATP?

  10. Assignment • page 169-171 • Do Everything

  11. Molar Mass (M) • the mass of one mole of a sample • measured in grams per mole (g/mol) • the identity of the substance DOES matter

  12. Calculating Molar Mass (M) • write the correct formula • determine the number of each type of atom • multiply the number of each type of atom by the atomic mass • add up the products

  13. Example • Calculate the molar mass of Ca(NO3)2(s) • M = 1 Ca + 2 N + 6 O • = (1•40.08) + (2•14.01) + (6•16.00) • = 164.10 g/mol

  14. Mass - Mole Conversions • use the molar mass of a substance to convert between mass and moles • use the formula: n=m M

  15. Mass - Mole Conversions • use the molar mass of a substance to convert between mass and moles • use the formula: n=m M # of moles (mol)

  16. Mass - Mole Conversions • use the molar mass of a substance to convert between mass and moles • use the formula: n=m M mass (g) # of moles (mol)

  17. Mass - Mole Conversions • use the molar mass of a substance to convert between mass and moles • use the formula: mass (g) n=m M # of moles (mol) molar mass (g/mol)

  18. Example • Calculate the mass of 2.3 moles of Ca(NO3)2(s) • M = 1 Ca + 2 N + 6 O • = (1•40.08) + (2•14.01) + (6•16.00) • = 164.10 g/mol

  19. Example • n = m/M • m= nM • m= 2.3 moles x 164.10 g/mol • m= 377.4 g

More Related