Предмет: Химия, автор: sunshinechaeyoung

Напишите общие и ионные уравнения для реакции фосфорной кислоты с этими веществами а) с оксидом кальция б) с гидроксидом кальция​

Ответы

Автор ответа: Singulyarnostb
0

Ответ:

а

2H₃PO₄+3CaO= Ca₃(PO₄)₂+ 3H₂O

ионное

3CaO + 6H⁺ + 2PO4⁻₃ -> Ca₃(PO4)2 + 3H2O

б

2H₃PO₄+3Ca(OH)₂= Ca₃(PO₄)₂+ 6H₂O

ионное

3Ca⁺²+ 6OH⁻¹ + 6H⁺¹ + 2PO₄⁻³ ->Ca₃(PO4)₂ + 6H₂O

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I go to work by bus.

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Употребите следующие предложения в отрицательной и вопросительной форме

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His nose bled.

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Jack kept the money.

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Jean rang the bell.

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He shook the bottle.

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The Present Continuous Tense Поставьтеглаголы, данныевскобках, в Present Continuous

 

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He (teach) his boy to ride.

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Past Continuous Tense поставьтеглаголы, данныевскобках, в Past Continuous

 

 

 
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