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Question

balnce the equation by half equation mathod ? Zn+HC​​L---ZnCL2+H2

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Solution

OxidationZn Zn2+ + 2e- -----1Reduction HCl + e- H2 + Cl-Balance the above equation2HCl + 2e- H2 + 2 Cl- ----2Now add equation 1 and 2Zn Zn2+ + 2e- 2HCl + 2e- H2 + 2 Cl-------------Zn + 2 HCl Zn2+ + 2Cl- + H2-----------------or Zn + 2 HCl ZnCl2 + H2
Thus the equation is a balanced equation.

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