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2 years ago

In the following chemical reaction, what product is represented by X? (Hint: don't forget to criss cross!!!)

Chemistry

2 answers:

Luda [366]2 years ago

4 0

Answer:

Aluminum hydroxide Al(OH)3

Explanation:

Sodium switches places with Aluminum and the new products are formed.

A balanced equation would look like this.

AlCl3 + 3NaOH → Al(OH)3 + 3NaCl

AlladinOne [14]2 years ago

3 0

Answer: AlOHsubscript 3

Explanation: this is a double replacement reaction meaning that the two reactants that are compounds switch. Al has an oxidation charge of +3 and OH has an oxidation charge of -1 it becomes subscript 3 to make it even 3 x -1 is -3. Since this is a chemical reaction you may have to balance it by using coefficients on either side of the equation. For this problem you need to use a coefficient of 3 in front of NaCl and NaOH with x being AlOHsubscript 3 since there’s only 1 OH on the reactants side.

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Why is knowing the density of water important to us? Give a reasonable answer

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8 0

1 year ago

What kind of chemical reaction does the chemical equation sodium + chlorine → sodium chloride represent?

Vinil7 [7]

D. Synthesis cause A + B --> AB Equation: 2Na + Cl2 --> 2NaCl

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3 years ago

Read 2 more answers

A buffer is prepared by adding 300. 0 ml of 2. 0 mnaoh to 500. 0 ml of 2. 0 mch3cooh. what is the ph of this buffer? ka= 1. 8 10

Anton [14]

The Henderson-Hasselbalch equation can be used to determine the pH of the buffer from the pKa value. The pH of the buffer will be 4.75.

<h3>What is the Henderson-Hasselbalch equation?</h3>

Henderson-Hasselbalch equation is used to determine the value of pH of the buffer with the help of the acid disassociation constant.

Given,

Acid disassociation constant (ka) = 1. 8 10⁻⁵

Concentration of NaOH = 2.0 M

Concentration of CH₃COOH = 2.0 M

pKa value is calculated as,

pKa = -log Ka

pKa = - log (1. 8 x 10⁻⁵)

Substituting the value of pKa in the Henderson-Hasselbalch equation as

pH = - log (1. 8 x 10⁻⁵) + log [2.0] ÷ [2.0]

pH = - log (1. 8 x 10⁻⁵) + log [1]

= 4.745 + 0

= 4.75

Therefore, 4.75 is the pH of the buffer.

Learn more about the Henderson-Hasselbalch equation here:

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6 0

1 year ago

Which explains how burning a magnesium ribbon highlights a toolmark?

Setler [38]

<h2>Answer:</h2>

The magnesium ribbon, <u>D. It forms a material to cast the tool mark</u>.

<h2>Explanation:</h2>

When a magnesium ribbon is burnt in the presence of oxygen it gives out strong light and heat is produced. Apart from it, it leads to the production of substance called as magnesium oxide which is formed as the product due to the reaction of magnesium with the oxygen present in the air.

Tool marks are the mark which is created by tools while using them. In order to identify or locate them castes made up of magnesium oxide is utilized. When this is pasted on the suspected area, the tool mark of the suspected tool gets pasted on it.

6 0

3 years ago

What can you conclude about these two reactions based on the chemical equations? Reaction A: 6CO2(g) + 6H2O(l) + sunlight ? C6H1

OlgaM077 [116]

Given reactions:

(A) 6CO2(g) + 6H2O(l) + sunlight → C6H12O6(aq) + 6O2(g)

(B) 2H2(g) + O2(g) → 2H2O(g) + energy

Exothermic reactions are those which proceed with the release of heat/energy. In contrast, endothermic reactions proceed with the absorption of energy in the form of heat or light.

Since reaction A required sunlight, it is endothermic. Reaction B releases energy, hence exothermic

Ans: (B)

A is endothermic

B is exothermic

8 0

2 years ago