All categories

4 years ago

How many liters of 0.85 M HCI solution would react completely with 3.5 moles Ca (OH)2?

1 answer:

7 0

Ca(OH)2+2HCL=CaCl2+2H2O
So the molar ratio between ca(oh)2 and hcl is 1 is to 2
Thus with each mole of ca(oh)2 the 2 moles of hcl will react
As a result for a complete reaction we need 7 mole of HCL
Molarity of hcl is 0.85
so number of litres of hcl needed would be 8.2 as
number of moles of hcl=8.2x0.85=7moles
So
ANSWER IS B 8.2 L OF HCL

You might be interested in

Substances that are created and come out of a chemical reaction

Nutka1998 [239]

May be reactants.....

5 0

3 years ago

According to the law of conservation of mass, mass cannot be gained or destroyed in a chemical reaction. Why can’t you simply ad

xxTIMURxx [149]

Explanation:

The law of conservation of mass states that mass is conserved which also means that it cannot be created or destroyed within the isolated system.

We can add the mass of the reactant and can be equal to the mass of the product. But in some cases, it will not work like:

If reactants are not in the mole ratio, there will be a limiting reagent.

If a gas is one of reactants or products.

Radioactive decay and nuclear reactions(fission or fusion).

6 0

3 years ago

A. 35 b.65 c.81 d.180

LUCKY_DIMON [66]

I think it's 80 . 12

pls tell me if correct

8 0

3 years ago

A sample of argon gas (molar mass 40 g) is at four times the absolute temperature of a sample of hydrogen gas (molar mass 2 g).

katen-ka-za [31]

Answer:

Ratio of Vrms of argon to Vrms of hydrogen = 0.316 : 1

Explanation:

The root-mean-square speed measures the average speed of particles in a gas, and is given by the following formula:

Vrms = $\sqrt{3RT/M}$

where R is molar gas constant = 8.3145 J/K.mol, T is temperature in kelvin, M is molar mass of gas in Kg/mol

For argon, M = 40/1000 Kg/mol = 0.04 Kg/mol, T = 4T , R = R

Vrms = √(3 * R *4T)/0.04 = √300RT

For hydrogen; M = 1/1000 Kg/mol = 0.001 Kg/mol, T = T, R = R

Vrms = √(3 * R *T)/0.001 = √3000RT

Ratio of Vrms of argon to that of hydrogen = √300RT / √3000RT = 0.316

Ratio of Vrms of argon to that of hydrogen = 0.316 : 1

4 0

4 years ago

What is the potential energy of the ball when it gets to its maximum height just before falling back to the ground?J

erastovalidia [21]

Answer:

9.8 joules

Explanation:

due to acceleration due to gravity

4 0

4 years ago