When a small piece of sodium metal is dropped into a beaker of water, hydrogen gas (H2) and a solution of sodium hydroxide (NaOH
1 answer:
Answer:
The reaction is exothermic as the solution becomes warm.
Explanation:
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In this case according to the described reaction between sodium metal and water, we can write up the chemical equation whereas the products turn out to be sodium hydroxide and hydrogen gas:
Moreover, these reactions are known to be highly exothermic, for that reason the solution becomes warm as the reaction releases heat as it goes to completion.
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<u>Answer:</u> 1.2 moles of carbon dioxide is produced for the given value of oxygen.
<u>Explanation:</u>
The chemical reaction for the combustion of acetylene follows the equation:
By stoichiometry of the reaction:
5 moles of oxygen produces 4 moles of carbon dioxide.
So, 1.5 moles of oxygen will produce = of carbon dioxide.
Hence, 1.2 moles of carbon dioxide is produced for the given value of oxygen.
In the given reaction, the substance that is the base of the reaction is . The correct option is C.
The base is a slippery liquid that is bitter and turns red litmus paper to blue.
Bases react with acids to form salts.
Then bases have pH above 7.
Examples of bases are calcium carbonate, sodium hydroxide, etc.
Thus, the correct option is C.
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