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Hello students, a question from balancing of redox reaction.
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The equation that has been given to us is pb -o -2 is reacting with fluoridine to give pb2 plus plus chlorine gas.
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The medium for this reaction is acidic.
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We have to balance this equation and give the sum of the coefficient of the balance equation at the end of the reaction.
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First of all, we will split the equation into two halves and the first half of the equation will be pbo2 is converted into pb2 plus.
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And the second half is chloride is converted into chlorine gas.
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One by one, we will balance the equation.
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The very first step is to balance the oxidation state.
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In order to balance the oxidation state, we have to calculate the.
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Oxidation number of lead on both side.
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On right hand side it is plus 2 and on left hand side it is plus 4 and we have to balance the equation with the help of electrons.
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So on the left hand side if we will add two electrons the oxidation state will be logically balanced.
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Now this next step is to balance the charge and charge has to be balanced with the help of medium.
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And here our medium is acidic.
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So we are going to use h plus in such a way that on both sides the visible charges are balanced.
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And this can be done by taking four hydrogen ion on the left side so that it is balanced by charge.
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The third step is to balance hydrogen atoms and this is done with the help of water.
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We can easily see that on left hand side there are four hydrogen atoms and on the right hand side there is no hydrogen at all.
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So we must add two molecules of water so that the number of hydrogen becomes equal on both sides.
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And fourth step is to balance the oxygen atoms and this should get balance automatically.
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We don't have to put any effort to balance.
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It.
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So our balanced equation, first balance equation is pb -o -2 plus two electrons plus four hydrogen ions is equal to p bion plus four water...