All categories

3 years ago

In a first–order reaction (A → B and rate = k [A]), tripling the concentration of A will have what effect on the reaction rate?

Chemistry

1 answer:

Natali [406]3 years ago

5 0

Answer:

Tripling the concentration of A will triple the reaction rate.

Explanation:

For a first–order reaction hat has a rate law:

Rate = k[A].

It is clear that the reaction rate is directly proportional to the concentration of A.

Rate ∝ [A].

So, Tripling the concentration of A will triple the reaction rate.

You might be interested in

Determine the mass of carbon iv oxide ,produced on burning 104g of ethyne

mars1129 [50]

163 grams (3 sig. fig.).

<h3>Explanation</h3>

Formula of carbon(IV) oxide (a.k.a. carbon dioxide): $\text{CO}_2$ .
Molar mass of $\text{CO}_2$ : $\underbrace{12.01}_{\text{C}} + 2\times\underbrace{16.00}_{\text{O}}=44.01\;\text{g}\cdot\text{mol}^{-1}$ .

Formula of ethyne: structural $\text{H}-\text{C}\equiv\text{C}-\text{H}$ or molecular $\text{C}_2\text{H}_2$ .
Molar mass of $\text{C}_2\text{H}_2$ : $2\times\underbrace{12.01}_{\text{C}}+2 \times\underbrace{16.00}_{\text{O}} = 56.02\;\text{g}\cdot\text{mol}^{-1}$ .

All carbon atoms in that 104 grams of ethyne will end up in $\text{CO}_2$ . Number of moles of molecules in 104 grams of ethyne:

$n = \dfrac{m}{M} = \dfrac{104}{56.02} = 1.85648\;\text{mol}$ .

There are two carbon atoms in each ethyne molecule. Number of carbon atoms in that many ethyne molecules:

$n(\text{C}) = 2\;n(\text{C}_2\text{H}_2) = 3.71296\;\text{mol}$ .

There are one carbon atom in each $\text{CO}_2$ molecule. In case oxygen is in excess, all those carbon atoms from that 104 grams of ethyne will make $n(\text{CO}_2) = n(\text{C}) =3.71296\;\text{mol}$ of $\text{CO}_2$ .

Mass of all those $\text{CO}_2$ molecules:

$m = n\cdot M = 163\;\text{g}$ . (3 sig. fig. as in the mass of ethyne.)

7 0

3 years ago

The Mississippians were considered to be horticulturalists, which means they were

Mkey [24]

They were Native Americans.

8 0

3 years ago

I WILL GIVE YOU BRAILEST!!!!!!!!!

Sholpan [36]

Answer:

atomic modifier

Explanation:

. Identify at least three reasons the Articles of Confederations failed as a governing document. In your opinion, evaluate which defect was most debilitating, using evidence and your knowledge of American government to justify your position. [5]

6 0

3 years ago

Read 2 more answers

The ratio of boys to girls at a school

Marat540 [252]

Answer:

Si tú puedes 1-2-3-4-5-6-7-8-9-10 eso debes de ser más bien dicho sacaran Club Ojalá que te ayude Chau

Explanation:

de Ojalá que te ayude No te olvides de sacar todas las preguntas esas lo que tú dijiste y si tú promoción 123 saquen globo que quieras tú

5 0

3 years ago

Place the following elements in order of increasing electronegativity.K Cs PA. K < P < CsB. P < Cs < KC. Cs < K &

skad [1K]

Answer:

C. Cs < K < P

Explanation:

Electronegativity is the basically the tendency of an atom to attract electrons. The pauling scale is used to quantify electronegativity, the most electronegative element; fluorine has a value of 4.0 and francium, the least electronegative element has a value of 0.7

The electronegative values of the following elements are given as;

K = 0.82

Cs =0.79

P = 2.19

Arranging in order of increasing electronegativity, we have;

Cs < K < P. The correct option is;

C. Cs < K < P

5 0

3 years ago