8.ask each other questions to find out the missing information. A LOVE STORY (Part-1)
George loves
George phones Lily every day.
He sends her every week.
George wrote a poem for Lily.
The poem was about
One day George saw Lily in the park.
She was talking to
James gave Lily some flowers.
James kissed
Suddenly Lily saw George.
hit James.
A policeman saw George.
The policeman took George
to the .(Where?)
James drove Lily home.Lily got married to .
George wrote va novel,
It was called .
A LOVE STORY (Part-2)
George loves Lily.
George phones Lily .(How often?)
He sends her flowers every week.
George wrote a for Lily.
The poem was about her blue eyes and red lips.
One day George saw Lily in the .(Where?)
She was talking to James.
gave Lily some flowers.
James messed Lily.
Suddenly Lily saw .
George hit James.
saw George.
The policeman took George to the police station.
Ребятушки
ZnSO₄ ---> Zn⁺² + SO₄;
Zn⁺² + HOH ---> ZnOH⁺ + H⁺ (PH<7);
ZnSO₄ + H₂O ---> (ZnOH)₂SO₄ [гидроксосульфат цинка] + H₂SO₄;
ZnOH⁺ + НOH ---> (ZnOH)₂ + H⁺ (PH<7);
(ZnOH)₂SO₄ + H₂O ---> (ZnOH)₂ + H₂SO₄
2) NH₄CH - гидролиз по катиону и аниону (NH₄OH - слабое основание, CHOOH - слабая кислота)--->идет в одну стадию:
NH₄CH ---> NH₄⁺ + CH⁻
NH₄⁺ + CH⁻ + HOH ---> NH₄OH + CHOOH (PH=7)
NH₄CH + H₂O ---> NH₄OH + CHOOH
3) Li₂SO₄ - гидролиз не идет, так как и основание, и кислота - сильные.
Примечания: HOH - так для наглядности представлена вода;
PH <7 - среда кислая, PH >7 - среда щелочная, PH=7 - среда нейтральная.