Ex. 4 Put the questions to the bold-typed words. Nitric acid (HNO3) is a highly corrosive mineral acid.
Two solid hydrates are known.
This reaction gives rise to the variation.
This reaction produces vapor above the liquid.
We undergo this acid thermal decomposition.
Nitric acid is normally a strong acid at ambient temperatures.
Nitric acid is a powerful oxidizing agent.
Ex. 5 Put the words in a right order. Is / soluble / water / nitric acid / in.
Nitric acid / we / thermal decomposition / undergo.
Nitrogen oxide / partly / dissolves.
Contains / the substantial quantities of nitrogen oxide / this acid.
It / a reddish / has / colour.
People / nitric acid / explosive industry / in / use.
Nitric acid / doesn’t / a high concentration / have.
Ex. 6 Translate the following sentences from English into Russian or Kazakh. Nitric acid is colourless.
An azeotrope has an acrid odour.
Who uses nitric acid in explosive industry ?
The nitration includes the addition of nitro group into an organic molecule.
The density of the acid is very low.
Fuming acid doesn’t contain this substance.
Nitric acid is a compound.
Nitric acid doesn’t dissolve completely.
Ex. 8 Read and translate the text How we make sulfuric acid We often use the reaction of sodium metabisulfite with acid in the making of sulfuric acid. This reaction provides a convenient source of sulfur dioxide. It usually prevents the clogging of tubes by the sulfur vapors and soot. We convert sulfur dioxide into sulfuric acid. We do this with the help of its reaction with an oxidizer in water.
Industrially, sulfur dioxide reacts with oxygen over a catalyst to make sulfur trioxide. This is very cheap method of production. People usually use it in industry.
We sometimes use potassium metabisulfite instead of sodium metabisulfite. Chemists use both substances to sterilize winemaking mixtures. We always use the oxidizers because this reaction doesn’t work without them.
Vocabulary sulphuric acid – серная кислота
convenient source – подходящий источник
sodium metabisulfite – метабисульфат натрия
the making – производство
sulfur dioxide – диоксид серы
to provide – обеспечивать
to prevent – предотвращать
clogging of tubes – забивание трубок
sulfur vapors – пары серы
soot – сажа
to convert – преобразовывать
sulfur dioxide – диоксид серы
with the help of – с помощью
oxidizer – окислитель
to react – реагировать
industrially - на производстве
a catalyst – катализатор
over –над
to make – получать
sulfur trioxide- триоксид серы
a cheap method of production – не дорогой метод производства
potassium metabisulfite - метабисульфат калия
to sterilize – стерилизовать
a mixture – смесь
winemaking mixtures - смеси, использующиеся в виноделии
