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3 years ago

4. Which is produced when a base reacts with water?

Chemistry

2 answers:

a_sh-v [17]3 years ago

6 0

Answer:

$OH^{-1}$ ions.

Explanation:

Hydrogen ions (H+) are attracted to the negative oxygen end of a water molecule, combining to form hydronium ions.

Base: Very definition of base is that it produces OH- on dissolution with water. Bases have a pH greater than 7. A base is any substance that dissolves in water and produces hydroxide ions (OH-).

Dennis_Churaev [7]3 years ago

5 0

Answer:

hydroxide ion

Explanation:

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The mass of an atomic number best refers to the number of

adelina 88 [10]

Answer:

Mass number

Explanation:

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2 years ago

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when washing soda is mixed with lemon juice, bubbles are formed with the evolution of gas. what type of change is it.

aleksandr82 [10.1K]

Answer:

it is a chemical change

Explanation:

it is a chemical change since the lemon juice can not be returned to its original form some part of it had been converted to gas form

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2 years ago

Which of the following bases can remove a proton from formic acid in a reaction that favors products?

Debora [2.8K]

Hydroxide ion is a strong and would react with H+ to form water

OH-+H+---->H2O

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2 years ago

an unknown molecule is found to consist of 24.2% carbon by mass, 4.0% hydrogen by mass and the remaining mass is due to chlorine

Paha777 [63]

Answer:

C3 H6 Cl 3

Explanation:

C -24.2%

H - 4.0%

Cl - (100-24.2 - 4.0)=73.8 %

We can take 100g of the substance, then we have

C -24.2 g

H - 4.0 g

Cl - 73.8 g

Find the moles of these elements

C -24.2 g/12.0 g/mol =2.0 mol

H - 4.0 g/1.0 g/mol = 4. 0 mol

Cl - 73.8 g/ 35.5 g/mol = 2.1 mol

Ratio of these elements gives simplest formula of the substance

C : H : Cl = 2 : 4 : 2 = 1 : 2 : 1

CH2Cl

Molar mass (CH2Cl) = 1*12.0 +2*1.0 + 1*35.5 = 49.5 g/mol

Real molar mass = 150 g/mol

real molar mass/ Molar mass (CH2Cl) = 150 /49.5=3

So, Real formula should be C3 H6 Cl 3.

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3 years ago

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If the pOH of a nitric acid (HNO3) solution is measured as 11, what is the concentration of HNO3 solution? Choose one

miss Akunina [59]

PH + pOH = 14

pH
= 14 - pOH
= 14 - 11
= 3

pH = 3
- lg [H+] = 3
[H+]
= 0.001
= [HNO3]
= 1 x 10-3 M

8 0

2 years ago