Choose the best: Chemical reactions and equations

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Choose the best answer:

1. Write a balanced chemical equation using state symbols for the following reaction.

Solid magnesium and oxygen gas react to give solid magnesium oxide.

\(Mg\)(aq) + \(O_2\)(g) → \(MgO\)(s)
\(Mg\)(s) + \(O_2\)(g) → \(MgO\)(aq)
\(Mg\)(s) + \(O_2\)(g) → \(MgO\)(s)
\(Mg\)(s) + \(O_2\)(g) → \(MgO\)(l)

2. Choose the balanced equation for the following chemical reaction.

Calcium oxide + water→ Calcium hydroxide

\(Cu_O\) + \(H_2O\) → \(Ca(OH)_2\)
\(Ca_O\) + \(H_3O\) → \(Ca(OH)_2\)
\(Ca_O\) + \(H_2O\) → \(Cu(OH)_2\)
\(Ca_O\) + \(H_2O\) → \(Ca(OH)_2\)

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1. Choose the best: Chemical reactions and equations

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