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Vedmedyk [2.9K]
3 years ago
11

Which of the following is not true about limiting and excess reagents?

Chemistry
1 answer:
Bogdan [553]3 years ago
4 0

Answer : The incorrect option is, (d) The reactant that was the smallest given mass is the limiting reagent.

Explanation :

Limiting reagent : It is the reagent that is completely consumed in the chemical reaction when the chemical reaction is complete. No amount is left after the reaction is complete. The amount of product obtained is determined by the limiting reagent. A balanced equation is necessary to determine which reactant is limiting reagent.

Excess reagent : It is the reagent that are not completely consumed in the chemical reaction. That means the reagent is in excess amount. Some amount of the excess reagent is left over after the reaction is complete.

From this we conclude that the options, A, B and C are correct. While the option D is incorrect.

Option D is incorrect because it is not necessary the reactant that was the smallest given mass is the limiting reagent but it is judge by the number of moles present in the reaction.

Hence, the incorrect option is, (d)

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1. The s orbitals are not symmetrical in shape.<br> a. TRUE<br> O. FALSE
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The s orbitals are not symmetrical in shape is a FALSE statement.

An s orbital is so symmetric, more specifically spherically symmetric that it looks the same from all directions.

  • The atomic orbitals in the atoms of elements differ in shape.

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4 0
3 years ago
(Boyle's Law):
elena-s [515]

<u>Answer:</u> The final volume will be 16.85 mL

<u>Explanation:</u>

To calculate the new pressure, we use the equation given by Boyle's law. This law states that pressure is inversely proportional to the volume of the gas at constant temperature.  

The equation given by this law is:

P_1V_1=P_2V_2

where,

P_1\text{ and }V_1 are initial pressure and volume.

P_2\text{ and }V_2 are final pressure and volume.

We are given:

Conversion factor: 1 atm = 760 torr

P_1=705torr=0.927atm\\V_1=50mL\\P_2=2.75atm\\V_2=?mL

Putting values in above equation, we get:

0.927atm\times 50mL=2.75atm\times V_2\\\\V_2=16.85mL

Hence, the final volume will be 16.85 mL

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