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3 years ago

I NEED HELP PLEASE, THANKS! :)

Chemistry

2 answers:

wariber [46]3 years ago

4 0

Answer:

the answer is K=[CaCO2][H2]4[CaO][CH4][H2O]2

and I think it's right but if it's wrong Im sorry

TEA [102]3 years ago

3 0

Answer:

$K=\frac{[CaO][CH_{4}][H_{2}O ]^{2} }{[CaCO_{2}][H_{2}]^4 }$

Explanation:

The equilibrium expression is the K value equal to the product of the concentrations of the products over the product of the concentrations of the reactants. If there is a coefficient in front of the compound, raise the molecule to that power.

Since K is big, more product is expected. This is because of mathematic principles. A large numerator with a small denominator will produce a large number.

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Answer:

Explanation:

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A sample of methane at a pressure of 1.00 atm and a temperature of 93.1 K is heated at constant pressure to a temperature of 158

Zinaida [17]

Answer:

b. The final state of the substance is a gas.

d. The sample is initially a liquid. One or more phase changes will occur.

Explanation:

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Normal melting point: 90.7 K
Normal boiling point: 111.65 K

*"Normal" refers to normal pressure (1 atm).

According to this, we can affirm:

Below 90.7 K, methane is solid.
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A sample of methane at a pressure of 1.00 atm and a temperature of 93.1 K is heated at constant pressure to a temperature of 158 K. Which of the following are true? Choose all that apply.

a. The liquid initially present will solidify. FALSE. The liquid will vaporize.

b. The final state of the substance is a gas. TRUE.

c. The sample is initially a solid. FALSE. The sample is initially a liquid.

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jekas [21]

Answer: The reaction order with respect to A is 'm'

Explanation:

Order of the reaction is the sum of the concentration of terms on which the rate of the reaction actually depends. It is equal to the sum of the exponents of the molar concentration in the rate law expression.

Elementary reactions the reactions for which the order of the reaction is same as its molecularity and order with respect to each reactant is equal to its stoichiometric coefficient as represented in the balanced chemical equation.

The given chemical equation follows:

$aA+bB\rightleftharpoons cC+dD$

The rate of the above reaction is given to us as:

$Rate=k[A]^m[B]^n$

In the above rate law expression, the order with respect to the reactants is not equal to the stoichiometric coefficients. Thus, it is not an elementary reaction.

Order with respect to reactant A = m

Order with respect to reactant B = n

Hence, the reaction order with respect to A is 'm'

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