Calculate the quantity of heat released when 100g of steam at 100°C condenses to water (Take the specific latent heat of vaporization of water as 2.3x 10^6Jkg−¹)

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A. 2.3×10¹J
B. 2.3×10²J
C. 2.3×10^4J
D. 2.3×10^5J
E. 3.3×10^7J

Correct Answer:

Option D – 2.3×10^5J

Explanation

ΔH=mL=0.1×2.3×10^6 =2.3×10^5J

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