Напишите уравнения реакций CH4→X1→X2 → бутин-1 →X3 → бутанол-2

1) 2CH4® HC≡ CH + 3H2
2) HC≡ CH + NaNH2 → HC≡ CNa + NH3
3) HC≡ CNa + CH3 – CH2 – Br → HC≡ C – CH2 – CH3 + NaBr
4) HC≡ C – CH2 – CH3 + H2O → H3C – C – CH2 – CH3
                                                                  O
5) H3C–C (=О)– CH2 – CH3 + H2 → H3C – CH(ОН) – CH2 – CH3