Calculate the energy needed to convert three moles of sodium atoms in the gaseous state to sodium ions. The ionization energy of sodium is 495 kJ mol-1:

Question

Calculate the energy needed to convert three moles of sodium atoms in the gaseous state to sodium ions. The ionization energy of sodium is 495 kJ mol-1: (A) 1485 kJ (B) 495 kJ (C) 148.5 kJ (D) None

Tardigrade Admin · Accepted Answer

Energy needed to convert 1 mole of sodium (g) to sodium ions = 495 kJ ∴ Energy needed to convert 3 moles of Na(g) to Na+ ions =495×3=1485 kJ

Q. Calculate the energy needed to convert three moles of sodium atoms in the gaseous state to sodium ions. The ionization energy of sodium is $495 k J m o l^{- 1} :$

$1485 k J$

$495 k J$

$148.5 k J$

None

Energy needed to convert 1 mole of sodium $(g)$ to sodium ions $= 495 k J$
$∴$ Energy needed to convert 3 moles of $N a (g)$ to $N a^{+}$ ions $= 495 \times 3 = 1485 k J$

Q. Calculate the energy needed to convert three moles of sodium atoms in the gaseous state to sodium ions. The ionization energy of sodium is 495kJmol−1:

1485kJ

495kJ

148.5kJ