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natulia [17]
3 years ago
7

If a color change occurs when two solutions are mixed is it true that a chemical react has probably taken place?

Chemistry
2 answers:
nika2105 [10]3 years ago
8 0

Answer:

Yes it is true

Explanation:

It is most likely a change has occurred with the PH of the solutions and it is a common indicator of a chemical reaction.

Phoenix [80]3 years ago
3 0

Answer: yes

Explanation: When you mix an acid an a base the color it showing a chemical change.

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What volume of o2 is needed to react fully with 720. Ml of nh3
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Ammonia undergoes combustion with oxygen to produce nitric oxide and water. The volume of the oxygen required to react with 720 ml of ammonia is 900 ml.

<h3>What is volume?</h3>

Volume is the area occupied by the substance and is the ratio of the mass to the density.

At STP, 1 mole of gas occupies 22.4 L of volume

Given,

Volume of ammonia reacted = 0.720 L

The combustion reaction is shown as,

\rm 4NH_{3} + 5O_{2} \rightarrow 4NO +6H_{2}O

From the stoichiometry of the reaction, it can be said that,

(4 \times  22.4) L of ammonia reacts with (5 \times  22.4) L of oxygen gas.

So, 0.720 L of  ammonia will react with:

\dfrac{ (5 \times  22.4)}{(4 \times  22.4)} \times 0.720 = 0.9 \;\rm L

Therefore, the volume of oxygen required is 900 mL.

Learn more about volume here:

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