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hodyreva [135]
2 years ago
6

Which of the following is a property of bases? (1 point)

Chemistry
1 answer:
sveta [45]2 years ago
7 0
Which of the following is a property of bases?

B. Feels slippery

This is most likely the Chemical Properties of Bases

The Chemical Properties of Bases include:

- Bases change the colour of litmus from red to blue.

- They are bitter in taste.

- Bases lose their basicity when mixed with acids.

- Bases react with acids to form salt and water. This process is called Neutralisation Reaction(Read).

- They can conduct electricity.

- Bases feel slippery or soapy.

- Some bases are great conductors of electricity.

- Bases like sodium hydroxide, potassium hydroxide, etc are used as electrolytes.

- Alkalis are bases that produce hydroxyl ions (OH-) when mixed with water.

- Strong alkalis are highly corrosive in nature whereas other alkalis are mildly corrosive.

- The pH value of bases ranges from 8-14.
Alkalis and ammonium salts produce ammonia.

- Hydrogen gas is evolved when metals react with a base.

- Bases are classified on the basis of strength, concentration and acidity.

- The different kinds of acids are strong base acid, weak base acid, concentrated base, dilute base, monoacidic base, diacidic base and triacidic base.
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Which of the following metals will react with water to produce a metal hydroxide and hydrogen gas? a. Mg b. Li c. Al d. Pb
Stells [14]

I believe the answer is A) Mg.

5 0
3 years ago
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3 & 4 Help pleaseeeee
kvasek [131]
3 is C i believe, and as for 4 minerals are solid, natural.. that's about all I can say...
4 0
3 years ago
[15 Points, Stoichiometry and Gases]
KiRa [710]

The reaction is

CaC₂(s) + 2H₂O (l) -----> Ca(OH)₂ (s) + C₂H₂ (g) ​

As we have data of gas ethyne (or acetylene), C₂H₂

We can calculate the moles of acetylene and from this we can estimate the mass of calcium carbide taken

the moles of acetylene will be calculated using ideal gas equation

PV =nRT

R = gas constant = 0.0821 Latm/molK

T = 385 K

V = volume = 550 L

P = Pressure = 1.25 atm

n = moles = ?

n = PV /RT = 1.25 X 550 / 0.0821 X 385 = 21.75 mol

As per balanced equation these moles of acetylene will be obtained from same moles of calcium carbide

moles of calcium carbide = 21.75mol

molar mass of CaC₂ = 40 + 24 = 64

mass of CaC₂ = moles X molar mass = 21.75 X 64 = 1392g

6 0
3 years ago
Read 2 more answers
Calculate the boiling point of a 1.5 m aqueous solution of NaCl. The boiling point constant of water is 0.512 °C/m. Remember, m
grigory [225]

I think thee answer is C


3 0
2 years ago
In a hydrogen molecule, the two hydrogen atoms are held together by a single bond with a bond energy of 436 kj/mol of hydrogen.
svetoff [14.1K]

Answer: 873 kJ of energy will be required to break two moles of hydrogen gas.

2H_2+O_2\rightarrow 2H_2O

Above chemical equation shows that two moles of hydrogen gas is reacting with one mole of oxygen gas to give two mole of water molecule.

Bond energy of H-H = 436kJ

According to reaction we have two moles hydrogen,so energy required to break the

H-H bond in two moles of hydrogen gas will be:

2\times \text{bond energy of H-H bond}

2\times {436} = 872kJ

872kJ of energy will be required to break H-H bond in two moles of hydrogen gas.




5 0
3 years ago
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