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3 years ago

What is true when a reaction has reached equilibrium?

Chemistry

2 answers:

ASHA 777 [7]3 years ago

6 0

Answer:

I think its `b

Explanation:

Marysya12 [62]3 years ago

4 0

A reaction is said to have reached equilibrium when the reaction rate is equal in both directions (c).

Like, take the example of copper in copper sulphate solution. When you add Cu to CuSO4 soln., there won't be any change occurring as the reaction rate is equal (Cu is added to CuSO4 soln., there won't be any change as displacement reaction won't take place due to Cu being the same metal as in CuS04 soln...their reaction is the same).

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RainbowSalt2222 ☔

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What would happen to the amount of matter on Earth if mass were not conserved during the changes on states?

Mademuasel [1]

What would happen to the amount of matter on earth if mass were not conserved during changes of state?

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3 years ago

Which equation or rule can be used to estimate the pseudo-critical properties of mixtures based on the pure-component critical c

sveticcg [70]

Answer:

c. Kay's rule

Explanation:

Kay's rule -

The rule is used to determine the pseudo reduced critical parameters of mixture , with the help of using the critical properties of the components of a given mixture .

The equation for Kay's rule is as follows ,

PV = Z RT

Where Z = The compressibility factor of the mixture .

Hence from the given options , the correct answer is Kay's rule .

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3 years ago

Two iron bolts of equal mass—one at 100.°C, the other at 55°C—are placed in an insulated container. Assuming the heat capacity o

BARSIC [14]

The final temperature inside the container is 77.5°C

<h3>Solution ; </h3>

There are two heat transfers involved:

heat lost by bolt 1 + heat gained by bolt 2 = 0

-q(heat released by iron bolt) at higher temperature = q(heat gained by iron bolt) at lower temperature

-(cm)(T2-Treat higher temperature) = (cm)(T2-Tre at lower temperature)

-[0.450/(J/g-K) × m × (T2 -100°C)] = [0.450/(J/g-K) × m × (T2 -55°C)]

Or, -(T2 - 100°C) (T2 - 55°C) T2+T2 = 100°C + 55°C

Or, T2 = 155°C /2 = 77.5°C

<h3>What is Specific Heat ?</h3>

Specific heat is the amount of heat necessary to increase the temperature of one gram of a substance by one degree Celsius. Specific heat is often measured in calories or joules per gram per Celsius degree. Water, for example, has a specific heat of one calorie (or 4.186 joules) per gram per Celsius degree.

To know more about Specific Heat please click here : brainly.com/question/21406849

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4 0

2 years ago

How can you tell a chemical change has happend?

Maru [420]

Answer:

a chemical change are a change in color and the formation of bubbles.

chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.

Explanation:

Change it up a little bit and your teacher will never know. :)

3 0

3 years ago

Suppose that 2.5 mmol n2 (g) occupies 42 cm3 at 300 k and expands isothermally to 600 cm3. calculate Î´gm in kj/mol for the proc

andriy [413]

<u>Given:</u>

MilliMoles of N2 = 2.5 mmol = 0.0025 moles

Initial volume V1 = 42 cm3

Final volume V2 = 600 cm3

Temperature T = 300 K

<u>To determine:</u>

The change in Gibbs free energy, ΔG

<u>Explanation:</u>

The change in Gibbs free energy is related to the ration of the volumes:

ΔG = -nRTln(V2)/(V1)

= -0.0025*8.314*300*ln(600/42) = -16.582 J/mol

Ans: The Gibbs free energy for the process is 0.0166 kJ/mol

8 0

3 years ago