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Drupady [299]
1 year ago
5

. A room temperature white solid is mixed with a room temperature clear liquid resulting in a clear, colorless liquid that is ho

t to the touch. Has a chemical reaction occurred? Why or why not? (It may be possible to argue in favor of yes OR no. Defend YOUR answer.)
Chemistry
1 answer:
timurjin [86]1 year ago
5 0

Yes, the chemical reaction occurs because new substance is formed and heat energy is released.

<h3>What is chemical reaction?</h3>

Chemical reaction is a process in which one or more substances i.e. the reactants, are converted to one or more different substances i.e. the products so we can conclude that the chemical reaction occurs because new substance is formed and heat energy is released.

Learn more about chemical reaction here: brainly.com/question/11231920

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3 years ago
If you mix a 25.0mL sample of a 1.20m potassium sulfide solution with 15.0 mL of a 0.900m basium nitrate solution and the reacti
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Limiting reagent: barium nitrate

Theoretical yield: 2.29 g BaS

Percent yield: 87%

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The corrected balanced reaction equation is:

K₂S + Ba(NO₃)₂ ⇒ 2KNO₃ + BaS

The amount of potassium sulfide added is:

(25.0 mL)(1.20mol/L) = 30 mmol

The amount of barium nitrate added is:

(15.0mL)(0.900mol/L = 13.5 mmol

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(13.5 mmol Ba(NO₃)₂)(BaS/Ba(NO₃)₂ ) = 13.5 mmol BaS

Converting this amount to grams gives the theoretical yield of BaS (molar mass 169.39 g/mol).

(13.5 mmol)(169.39 g/mol)(1g/1000mg) = 2.29 g BaS

The percent yield is calculated as follows:

(actual yield) / (theoretical yield) x 100%

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