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iVinArrow [24]
3 years ago
15

Predict how the addition of a catalyst would affect the rate of the reaction below, and explain your prediction H2 (g) + I2 (g)

yields 2 HI
Chemistry
2 answers:
QveST [7]3 years ago
7 0
The catalyst is defined as a chemical substance that helps increase the rate of the chemical reaction without being changed or affected by the reaction itself (the catalyst is not involved in the reaction, it only aids with increasing its speed).

Based on the above definition, adding a catalyst to the reaction:
H2 + I2 .........> 2HI
will increase the rate of the reaction. This means that the reaction will proceed faster and the product (HI) will be formed faster that the case where the catalyst is not added.

Hope this helps :)
Fynjy0 [20]3 years ago
4 0
A catalyst is a chemical substance that hastens the chemical reaction. This does not participates in the creating the product(s) but allows it to be formed easily. With this, it is now known that the rate of the reaction becomes relatively higher compared to the uncatalyzed reactions.

Therefore, the answer to this item is the rate of the reaction becomes faster. 
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Answer:

melting, freezing, and boiling are physical changes

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umka2103 [35]

Complete question from other source attached

Answer:

Explanation:

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7 0
4 years ago
a sample of CO2 occupies a volume of 280ml at a pressure of 1.3 atm and a temperature of 18 degrees celsius, what volume will th
monitta

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(P1 x V1) / T1 = (P2 x V2) / T2

The initial volume, pressure, and temperature were 280 mL, 1.3 atm, and 291.15 K (changing the temperature into Kelvin is necessary), and the final volume, pressure, and temperature is V2, 3.0 atm, and 308.15 K. Plugging these values in and solving, we find that:

(P1 x V1) / T1 = (P2 x V2) / T2

(1.3 atm x 280 mL) / 291.15 K = (3.0 atm x V2) / 308.15 K

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This makes sense considering the conditions, a small increase in temperature would make the gas expand but a significant increase in the pressure would cause the volume to decrease.

Hope this helps!

7 0
3 years ago
A student takes a measured volume of 3.00 M HCl to prepare a 50.0 mL sample of 1.80 M HCL. What volume of 3.00 M HCI
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Question 2 (Multiple Choice Worth 2 points)
faust18 [17]

Answer:

\pi r²  x h

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