Which of the following acid is obtained when sulphur trioxide reacts with water?

H_{2} S

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H_{2}

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H_{2} S O_{3}

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H_{2} S O_{4}

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Solution

The correct option is A $H_{2} S O_{4}$
Oxides that can add on hydrogen ions to their molecules are called acidic oxides. Thus when they dissolve in water they associate with hydrogen ions to form acids. Sulphur trioxide being an acidic oxide reacts with water to give sulphuric acid.

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Q. The acid formed when sulphur trioxide reacts with water is ___.

Name the acid formed when sulphur trioxide gas reacts with water.

Q. Write down the reaction when sulphuric acid reacts with sulphur trioxide.

M g + H_{2} S O_{4} \to M g S O_{4} + H_{2}

In this reaction, which mass of magnesium sulphate is formed when 6g of magnesium react with excess sulphuric acid?

When magnesium metal reacts with sulphuric acid it forms magnesium sulphate along with the evolution of hydrogen gas.

$M g + H_{2} S O_{4}$ $\to$ $M g S O_{4}$ + $H_{2}$

For experimental studies the conditions of the reaction was modified and rate of reaction was monitored. In which of the following case the occurance of the reaction is fastest?

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Which of the following acid is obtained when sulphur trioxide reacts with water?

The correct option is A H2SO4Oxides that can add on hydrogen ions to their molecules are called acidic oxides. Thus when they dissolve in water they associate with hydrogen ions to form acids. Sulphur trioxide being an acidic oxide reacts with water to give sulphuric acid.

The correct option is A $H_{2} S O_{4}$
Oxides that can add on hydrogen ions to their molecules are called acidic oxides. Thus when they dissolve in water they associate with hydrogen ions to form acids. Sulphur trioxide being an acidic oxide reacts with water to give sulphuric acid.