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Rzqust [24]
3 years ago
10

Solid potassium oxide and gaseous water are produced by the decomposition of solid potassium hydroxide . Write a balanced chemic

al equation for this reaction.
Chemistry
1 answer:
aliya0001 [1]3 years ago
5 0

Answer:

2 KOH → H₂O + K₂O

Explanation:

When KOH descomposes in potassium oxide, K₂O and water, H₂O.

The unbalanced equation is:

KOH → H₂O + K₂O

As you can see, 2 hydrogen, potassium and oxygen atoms are produced, to balance this equation we can write:

2 KOH → H₂O + K₂O

This is the balanced equation because 2 atoms of K, H and O are in reactants and products

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Reactant molecules are any substance that goes into a reaction. When forming product molecules, the reactant molecules combine and create a new molecule (i.e. the combination of methane and oxygen can make carbon dioxide and water). 
7 0
4 years ago
A gas occupies 800ml at a temperature of 27C. What is the volume at 132C?
pishuonlain [190]

V
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​
/T
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​
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(900.0 mL) / (300.0 K) = (x) / (405.0 K); x = 1215 mL.

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3 years ago
A 25.00-mL aliquot of a nitric acid solution of unknown concentration is pipetted into a 125-mL Erlenmeyer flask and 2 drops of
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Answer:

0.0611M of HNO3

Explanation:

<em>The concentration of the NaOH solution must be 0.1198M</em>

<em />

The reaction of NaOH with HNO3 is:

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<em>1 mole of NaOH reacts per mole of HNO3.</em>

That means the moles of NaOH used in the titration are equal to moles of HNO3.

<em>Moles HNO3:</em>

12.75mL = 0.01275L * (0.1198mol / L) = 0.0015274 moles NaOH = Moles HNO3.

In 25.00mL = 0.025L -The volume of the aliquot-:

0.00153 moles HNO3 / 0.025L =

<h3> 0.0611M of HNO3</h3>
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Separation of mixtures and purification of chemical substances
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