why dc changes composition of ionic solution?
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The DC current can separate the ions to the opp. poles- the cations can, if energy conditions permit, can pick up electrons to become neutral, and deposit , the same is true of anions/deposit .
Thus NaCl gets split as Na+ [+ electron ----> Na, but again it reacts with water to form NaOH & H], & Cl- [at anode, it becomes Cl, but again gets involved in reactions - so no free chlorine is obtained.The medium water gets decomposed ! As we cannot see an electron, the concept of its transfer, formation of elements, .... are really tough.
Thus NaCl gets split as Na+ [+ electron ----> Na, but again it reacts with water to form NaOH & H], & Cl- [at anode, it becomes Cl, but again gets involved in reactions - so no free chlorine is obtained.The medium water gets decomposed ! As we cannot see an electron, the concept of its transfer, formation of elements, .... are really tough.
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