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svetlana [45]
3 years ago
12

What is a base? chemistry

Chemistry
2 answers:
Molodets [167]3 years ago
4 0
The answer is letter B
Citrus2011 [14]3 years ago
3 0

Answer:

A base is <u><em>A. a substance that increace the concentration of OH- ions in solution.</em></u>

Explanation:

According to Arrhenius Theory, a base is any substance that, when dissolved, releases hydroxyl ions (OH–). The bases are also known as alkalis, because when the hydroxyl groups dissociate and release, the pH of the solutions increases, that is, the solution becomes alkaline. Then its pH is greater than 7.

According to the Brønsted-Lowry Theory, a base is a substance capable of accepting protons (H +) in solution.

According to Lewis Theory, the bases are also considered those substances capable of donating or transferring electrons.

So, <u><em>a base is A. a substance that increace the concentration of OH- ions in solution.</em></u>

You might be interested in
CC14
maria [59]

Answer:

Na and Cl

Explanation:

An ionic compound is solid at state room temperature. Therefore Na and Cl would be the correct answer :)

5 0
3 years ago
1) A mixture of anhydrous sodium carbonate and sodium hydrogencarbonate of mass 10.000 g was heated until it reached a constant
vodomira [7]

The masses of the components are obtained as;

  • Sodium hydrogen carbonate = 3.51 g
  • Sodium carbonate =  8.708 g
<h3>What is decomposition?</h3>

The term decomposition has to do with the breakdown of the given substance into its components. The components of sodium hydrogen carbonate could be identified as water vapor, carbon dioxide gas and sodium carbonate. Among these products that have been listed here, we can see that it is only the sodium carbonate that remains as a solid. The others are gases that move away from the system that is under study.

Now putting down the equation of the reaction, we have;

2NaHCO_{3} (s) ----- > Na_{2} CO_{3} (s) + CO_{2} (g) + H_{2} O(g)

Now, the loss in  mass must be due to the carbon dioxide and the water. Hence we obtain the loss in mass to be 10.000 g -  8.708 g = 1.292 g

Mass of sodium hydrogen carbonate = 2 * 88 g/mol * 1.292 g/62 g/mol

= 3.51 g

Learn more about anhydrous sodium carbonate :brainly.com/question/20479996

#SPJ1

6 0
1 year ago
I 13 Suggest why this group is called Group 8.​
yarga [219]

Answer:

because it's in group 8

Explanation:

3 0
3 years ago
If an ideal gas has a pressure of 4.03 atm,
kkurt [141]

Answer:

PV=nRT where P=pressure in atm, V=volume is liters, n=numbber of moles, R=gas constant, 0.08206 L-atm/mole KL, and T=temperature in K (273 + C).  So (5.67atm)(99.39L)=n(0.08206 L-atm/mol.K)(328.94K), solve for n, the number of moles, n=20.9 moles.

Explanation:

7 0
3 years ago
Which of the following is the correct name for MgCI?
kupik [55]

Answer:

C - Magnesium Chloride

Explanation:

The metal in a compounds name is always pronounced, and if the last element is a non-metal, the first half of the element is used and the last part is replaced with "ide"

7 0
3 years ago
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