Copper crystallises into a fcc lattice with edge length 3-61 - 10-8 cm- Show that the calculated density is in agreement with its measured value of 8-92-g-cm-3

D = Z × M/a^3 × N_A For fcc lattice of copper, Z = 4 Atomic mass of copper, M = 63.5 g mol^ 1 ∴ d = 4 × 63.5 g mol^ 1/(3.61 × 10^ 8 cm)^3 × (6.022 × 10^23 mol^ ...

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Standard XII

Chemistry

Density

Copper crysta...

Question

Copper crystallises into a fcc lattice with edge length $3.61 \times 10^{- 8} c m .$ Show that the calculated density is in agreement with its measured value of $8.92 g c m^{- 3}$

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Solution

$d = \frac{Z \times M}{a^{3} \times N_{A}}$
For fcc lattice of copper, Z = 4
Atomic mass of copper, $M = 63.5 g m o l^{- 1}$
$∴ d = \frac{4 \times 63.5 g m o l^{- 1}}{(3.61 \times 10^{- 8 c m})^{3} \times (6.022 \times 10^{23} m o l^{- 1})} = 8.97 g c m^{- 3}$
The above calculated value of density is approximately in agreement with its measured value of $8.92 c m^{- 3}$

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Q. a) Copper crystallizes into a fcc lattice with edge length

3.61 \times 10^{- 8}

. Show that the calculated density is in agreement with its measured value of

8.92 g / c m^{3}

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Q. Copper crystallizes into a fcc lattice with edge length

3.61 \times 10^{- 8} cm

. The calculated density is:

Q. Copper crystallises into a fcc structure and the unit cell has length of edge

3.61 \times 10^{- 8} c m

. Calculate the density of copper if the molar mass of

C u

63.5 g m o l^{- 1}

(8.92 g c m)

Q. Copper crystallises in fcc unit cell with cell edge length of

3.608 \times 10^{- 8} cm

. The density of copper is

8.92 {g cm}^{- 3}

. Calculate the atomic mass of copper.

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Density

Standard XII Chemistry

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Copper crystallises into a fcc lattice with edge length 3.61×10−8cm. Show that the calculated density is in agreement with its measured value of 8.92 g cm−3

d=Z×Ma3×NA For fcc lattice of copper, Z = 4 Atomic mass of copper, M=63.5 g mol−1 ∴d=4×63.5 g mol−1(3.61×10−8cm)3×(6.022×1023mol−1)=8.97 g cm−3 The above calculated value of density is approximately in agreement with its measured value of 8.92 cm−3

Copper crystallises into a fcc lattice with edge length $3.61 \times 10^{- 8} c m .$ Show that the calculated density is in agreement with its measured value of $8.92 g c m^{- 3}$