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3. Metals and Non-metals
medium
गर्म जल का टैंक बनाने में ताँबे का उपयोग होता है परंतु इस्पात (लोहे की मिश्रातु ) का नहीं। इसका कारण बताएइए।
Option A
Option B
Option C
Option D
Solution
Copper does not react with cold water, hot water, or steam. However, iron reacts with steam. If the hot water tanks are made of steel (an alloy of iron), then iron would react vigorously with the steam formed from hot water.
$\underset{\text{ Iron }}{\mathop{3Fe}}\,\,+\underset{\text{ Steam }}{\mathop{\,4{{H}_{2}}O}}\,\,\to \underset{\text{ Iron(II, III) oxide }}{\mathop{\,F{{e}_{3}}{{O}_{4}}}}\,\,+\underset{\text{ Hydrogen }}{\mathop{\,4{{H}_{2}}}}\,$
That is why copper is used to make hot water tanks, and not steel.
Standard 10
Science
