Qiraat in Salaah

Q: When one is performing Salaah, is it necessary for one to hear his own voice and whatever he is reciting?

Q: I started praying magrib alone before another brother joined me, so during the second rakaat I recited only one verse from the Quran (sura ghafir verse 44) after fatiha and went to ruku position. Since then I have been having doubts if my salaah is valid or not. If not what should I do because that brother is gone now. 

Q: If one omits the Tasmiyah before Surah Fatiha in the 2nd, 3rd and 4th rakaat of Salaah due to habit, will the Salaah be acceptable? When we read Salaah with Jamaat, the Tasmiya is always silent and unfortunately I developed this habit.

Q: Whilst praying maghrib salaah, what should we do if we accidently pray surah falak and surah naas in the three farz rakaats. Do we pray the same surahs in the two sunnat rakaats as well or can we pray any other surahs?

Q: If one has to recite only one Ayah in a rakat of a Salah how long it should be?

Q: In the second rakaat of Witr, one reads Sura Naas.  What Sura should or can then be recited in the third rakaat?

Q: I know that according to the Hanafi madhab to have a valid recitation one must hear oneselfs recitation. But what if there a surrounding noise, or during performance of salaah a surrounding noise (such as children talking etc) does start, does one still need to hear oneself ?

I came across to this statement of Nawawi but he is a Shafi scholar does the same count for the Hanafi madhab:

Al-Nawawi (may Allaah have mercy on him) said in al-Majmoo’ (3/256):  

The minimum form of reciting quietly is such that a person can hear himself if he is sound of hearing and there is no problem such as surrounding noise and the like. This is general in meaning and applies to recitation, takbeer, tasbeeh when bowing and so on, tashahhud, salaam and du’aa’, whether the prayer is obligatory or naafil; nothing of it counts unless he can hear himself, if he is sound of hearing and there is no problem. End quote. 

See: Tabyeen al-Haqaa’iq (1/127) and al-Bahr al-Raa’iq (1/356). 

Do the Hanafi scholars state the same since at the end two Hanafi books are mentioned i.e. Tabyin al Haqaiq and Bahr al Raiq ?

Q: I like reciting Surah Ikhlaas, from hadith we know that if one recites Surah Ikhlaas 3 times it equivalent to recitation of one complete Quran. I wanted to know whether surah Ikhlaas could be read:

1. In every rakath of Fardh salaat.
2. In every rakath of Sunnath salaat.
3. In every rakath of any nafil salaat
4. In every rakath during taraweeh if missed with Jamath.
5. In every rakath of Salatul Tauba, Salatul Thajjud, Witar and while offering the missed salaat.

Q: If I move my lips and tongue in my own individual namaaz but not to such an extent that I can hear myself had there to be pin-drop silence, is my salaah valid?

Q: If I read maghrib, esha and fajr alone at home, do I have to read it loudly or its just preferable?