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3 years ago

Consider the following reaction 2A + 3B -> 2C

Chemistry

1 answer:

Paladinen [302]3 years ago

6 0

Answer:

Explanation:

Given reaction is

2A + 3B -> 2C

From the above reaction for every 2 moles of A, 2 moles of C is formed and therefore for every mole of A reacted, 1 mole of C is formed

Now in this case we have 4 moles of A and excess amount of B

So in this case the limiting reagent is A and the excess reagent is B

As in this case A is the limiting reagent so for 4 moles of A reacted, 4 moles of C is formed

But formation of 4 moles of C is just expected because it is just the maximum amount of C formed as during the reaction there can be losses as well if the reaction is not done properly

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Which of the following statements about salinity is true?

diamong [38]

Answer:

The answer would be B.

Explanation:

Ocean water near areas with low evaporation has higher salinity.

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3 years ago

Read 2 more answers

The number of protons plus the number of neutrons in an atom is called its 7 number. for carbon-12, this number is

emmasim [6.3K]

The mass of Carbon-12 is 12.

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3 years ago

What is the longitude of the international date line

sveta [45]

Answer:

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3 years ago

A buffer solution is composed of 1.00 mol of acid and 2.25 mol of the conjugate base. If the p K a of the acid is 4.90 , what is

Gemiola [76]

<u>Answer:</u> The pH of the buffer is 5.25

<u>Explanation:</u>

Let the volume of buffer solution be V

We know that:

$\text{Molarity}=\frac{\text{Moles of solute}}{\text{Volume of solution}}$

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

$pH=pK_a+\log(\frac{[\text{conjugate base}]}{[acid]})$

We are given:

$pK_a$ = negative logarithm of acid dissociation constant of weak acid = 4.90

$[\text{conjugate base}]=\frac{2.25}{V}$

$[acid]=\frac{1.00}{V}$

pH = ?

Putting values in above equation, we get:

$pH=4.90+\log(\frac{2.25/V}{1.00/V})\\\\pH=5.25$

Hence, the pH of the buffer is 5.25

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3 years ago

What would happen to the volume of a sample of gas if the temperature was decreased at the same time the pressure was increased?

olasank [31]

Answer:

It would decrease

Explanation:

As temperature decreases the particles in the gas have less kinetic energy and therefore have less energy to overcome the bonds that hold them together and slowly move closer. Furthermore, increased pressure forces them to move closer to each other, decreasing the volume

3 0

3 years ago