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Q.

Balance the following chemical reaction . The coefficient of , and H+ in balanced reaction are ...., ...... and ..... respectively

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a

5, 2, 6

b

2, 5, 6

c

6, 5, 2

d

2, 6, 5

answer is B.

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Detailed Solution

MnO4-+SO3-2​−>Mn+2+SO42-  First half reaction M+7nO4−​→Mn+2  To balance hydrogen atoms, add H+ ions to left side. MnO4−​+8H+→Mn2++4H2O   To balance charge, add electrons to left side. MnO4−​+8H++5e−→Mn+2+4H2O  Second half reaction SO3-2​→SO4-2​  To balance oxygen atom, add H2O left side. SO3-2+H2O→SO4-2  To balance hydrogen atom, add H+ ions to right side SO3-2​+H2O→SO4-2​+2H+  To balance charge, add electron to right side SO3-2+H2O→SO4-2​+2H++2e−  Multiplying equation 1 by 2 and equation 2 by 5 add, we get 2MnO4−​+5SO3-2​+6H+→2Mn+2+5SO4-2​+3H2O
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Balance the following chemical reaction . The coefficient of , and H+ in balanced reaction are ...., ...... and ..... respectively