помогите написать уравнения:
1) раствор хлорида железа и гидроксида натрия получить гидроксид железа.
2) исходя из мела и лимонной кислоты получить, собрать и обнаружить углекислый газ
3)раствор хлорида меди и железного гвоздя получить чистую медь
4)раствор хлорида аммония и гидроксида натрия поучить газ аммиак

Complete each sentences using a passive form in an appropriate tence.
1. People think he committed suicide but Miss Marple believes ________ (murder).
2. The candidates _______ still (interview)
3. I came by bus because my car ___________ yet (repair)
4. «As far as I can see, nothing ___________ from the office», said the manager (steal)
5. We expect that all the paintings in the exhibition ____________ by the last day (sell)
6. When I went to the shop, I ________ that the photos ________ yet (tell, not develop)
7. All employees ______ to talk to the press, but my did so (forbid)
8. As soon as he looked at her face, Tom realized _____ (not forgive)
9. I ___________ the shed by the end of the month. I have already arranged all the formalities (build)
10. Students ______ to apply for this grant before April (should, advise)