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4 years ago

In a unimolecular reaction with seven times as much starting material as product at equilibrium, what is the value of keq?

Chemistry

1 answer:

Kitty [74]4 years ago

6 0

K_eq = 0.14

The chemical equation is

A ⇌ B

The equilibrium constant expression is

K_eq = [B]/[A]

If [A] = 7[B]

K_eq = [B]/{7[B]}= 1/7 = 0.14

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When the following equation is balanced with the lowest whole number coefficients possible, what is the coefficient in front of

Anastaziya [24]

Given: C3H8(g) + O2(g) ----> CO2 (g) + H2O (g)

Step : Put a 3 in front of CO2 (g) to balance C

=> C3H8(g) + O2(g) ----> 3CO2 + H2O to balance H

Step 2: Put a 4 in front of H2O

=> C3H8 (g) + O2(g) -----> 3CO2 (g) + 4H2O (g)

Step 3: Given that there are 3*2 + 4 = 10 O to the right side, put a 5 in front of O2 to balance O:

=> C3H8(g) + 5O2(g) -----> 3CO2(g) + 4H2O(g)

You can verify that the equation is balanced.

So, the answer is that the coefficient in front of O2 is 5.

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4 years ago

Read 2 more answers

Which chemical equation describes an acid-base neutralization reaction?

Natali5045456 [20]

HCL+NAOH=NACL+H2O
HCL=ACID
NAOH=Base
NACL=SALT
H2O=Wate

3 0

4 years ago

If the [H+] is 3.5x10-4, what is the [OH-]?

slava [35]

Answer:

2.90 x 10⁻¹¹moldm⁻³

Explanation:

Given parameters:

[H⁺] = 3.5 x 10⁻⁴mol/dm³

Unknown

[OH⁻] = ?

Solution;

The ionic product of water can be used to solve this problem. It has been experimentally determined to be 1 x 10⁻¹⁴mol² dm⁻⁶

[H⁺] [OH⁻] = 1 x 10⁻¹⁴

Therefore;

[OH⁻] = $\frac{1 x 10^{-14} }{H}$ = $\frac{1 x 10^{-14} }{3.5 x 10^{-4} }$ = 0.29 x 10⁻¹⁰moldm⁻³

= 2.90 x 10⁻¹¹moldm⁻³

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3 years ago

A woman informs her engineer husband that "hot water will freeze faster than cold water." He calls this statement nonsense but h

ankoles [38]

Answer:

Explanation:

It could be as a result of evaporation from the hot water causing it to have less mass than usual. Evaporation will allow the volume of the hot water to decrease and by so doing will cool faster than cold water which is at a higher mass. This is how I will explain my observations to them.

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3 years ago

A student mixed 100 mL of water at 15°C with 100 mL of water at 65°C. What is the final temperature of the water?

horrorfan [7]

Answer:

50°C

Explanation:

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3 years ago