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C2h6 cl2 HV. C2h5br na2s механизм. C2h5br + c2h5na механизм sn2. C4h10 br2 реакция.
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C2h6 cl2 HV. C2h5br na2s механизм. C2h5br + c2h5na механизм sn2. C4h10 br2 реакция. 