Given the following equation formats, which form matches a single replacement

The Weak Ionization constant (Ka) for HCOOH is equal to: Please help me lol

iris [78.8K]

Answer:

$Ka=\frac{[H^+][HCOO^-]}{[HCOOH]}$

Explanation:

Hello,

In this case, the weak ionization reaction for formic acid is:

$HCOOH(aq)\rightleftharpoons H^+(aq)+HCOO^-(aq)$

In such a way, we simply recall the law of mass action in order to represent the weak ionization constant, Ka, for such process, by taking into account that the concentration of products is divided over the concentration of reactants as shown below:

$Ka=\frac{[H^+][HCOO^-]}{[HCOOH]}$

Best regards.

8 0

3 years ago

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CaF2 + (NH4)2O --> 2 NH4F + CaO How many grams of NH4F can be formed from 34.6 grams of CaF2? (AKS 4f)

bixtya [17]

Answer:

32.83 grams of NH₄F can be formed from 34.6 grams of CaF₂

Explanation:

The balanced reaction is:

CaF₂ + (NH₄)₂O ⇒ 2 NH₄F + CaO

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following quantities participate in the reaction:

CaF₂: 1 mole
(NH₄)₂O: 1 mole
NH₄F: 2 mole
CaO: 1 mole

Being the molar mass of the compounds:

CaF₂: 78 g/mole
(NH₄)₂O: 52 g/mole
NH₄F: 37 g/mole
CaO: 56 g/mole

Then by stoichiometry, the following amounts of mass participate in the reaction:

CaF₂: 1 mole* 78 g/mole= 78 g
(NH₄)₂O: 1 mole* 52 g/mole= 52 g
NH₄F: 2 mole* 37 g/mole= 74 g
CaO: 1 mole* 56 g/mole= 56 g

You can apply the following rule of three: if 78 grams of CaF₂ form 74 grams of NH₄F by stoichiometry, 34.6 grams of CaF₂ will form how much mass of NH₄F?

$mass of NH_{4} F=\frac{34.6 grams of CaF_{2} *74 grams ofNH_{4} F}{78grams of CaF_{2} }$

mass of NH₄F= 32.83 grams

32.83 grams of NH₄F can be formed from 34.6 grams of CaF₂

5 0

2 years ago

Brainlist for best answer!!! Why will the whole ecosystem be affected by just one change?

Naddika [18.5K]

Answer:

Critical coordinate drivers incorporate living space alter, climate alter, obtrusive species, over exploitation, and contamination. Most of the coordinate drivers of corruption in biological systems and biodiversity right now stay steady or are developing in escalated in most biological systems.

Explanation:

7 0

3 years ago

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Enough energy is added to matter in the liquid state, it will change into a different state.

andrezito [222]

B because the liquid is getting energy so the particles of liquid will move faster and break free from other particles

3 0

3 years ago

Nataliya [291]

Coca-cola is similar to tomato juice because both are acidic drinks. Coca-cola is acidic because it is a carbonated drink. This means there is a presence of an acid in coke namely: carbonic acid and phosphoric acid. Tomato juice is also acidic because of the presence of vitamin c (ascorbic acid), but slightly less acidic than coke.

4 0

3 years ago

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