The energy of one mole of photons of radiation of frequency 2 × 1012 Hz in J mol -1 is . (Nearest integer) [. Given: h =6.626 × 10-34 Js . N A =6.022 × 1023 mol -1]

Question

The energy of one mole of photons of radiation of frequency 2 × 1012 Hz in J mol -1 is . (Nearest integer) [. Given: h =6.626 × 10-34 Js . N A =6.022 × 1023 mol -1] (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

For one photon E=h v For one mole photon, E =6 ⋅ 023 × 1023 × 6 ⋅ 626 × 10-34 × 2 × 1012 =798 ⋅ 16 J ≈ 798 J

Q. The energy of one mole of photons of radiation of frequency $2 \times 1 0^{12} Hz$ in $J m o l^{- 1}$ is ________. (Nearest integer)
$[$ Given : $h = 6.626 \times 1 0^{- 34} J s$
$N_{A} = 6.022 \times 1 0^{23} m o l^{- 1}]$

For one photon $E = h v$
For one mole photon,
$E = 6 \cdot 023 \times 1 0^{23} \times 6 \cdot 626 \times 1 0^{- 34} \times 2 \times 1 0^{12}$
$= 798 \cdot 16 J$
$\approx 798 J$

Q. The energy of one mole of photons of radiation of frequency 2×1012Hz in Jmol−1 is ________. (Nearest integer) [ Given : h=6.626×10−34Js NA​=6.022×1023mol−1]

For one photon E=hv For one mole photon, E=6⋅023×1023×6⋅626×10−34×2×1012 =798⋅16J ≈798J

Q. The energy of one mole of photons of radiation of frequency $2 \times 1 0^{12} Hz$ in $J m o l^{- 1}$ is ________. (Nearest integer)
$[$ Given : $h = 6.626 \times 1 0^{- 34} J s$
$N_{A} = 6.022 \times 1 0^{23} m o l^{- 1}]$

For one photon $E = h v$
For one mole photon,
$E = 6 \cdot 023 \times 1 0^{23} \times 6 \cdot 626 \times 1 0^{- 34} \times 2 \times 1 0^{12}$
$= 798 \cdot 16 J$
$\approx 798 J$