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3 years ago

Which two terms describe the pH scale

2 answers:

8 0

Answer: a term used to describe a solution that has a value below 7 on the ph scale. ... pH 7 is neutral which is exactly in between acidic and alkaline. Alkalinity is anthing ... What is the pH scale in terms of acids and bases? it is a scale that ... The pH scale is logarithmic; the difference between two units is x10.

Explanation: it's just that simple

KengaRu [80]3 years ago

6 0

Answer:

 pH scale is a device used to measure the concentration of Hydrogen ions (H+) in the solution.

Explanation:

pH scale measurement ranges from 0 to 14 and most arrangements do fall inside this range, in spite of the fact that it's conceivable to get a pH beneath 0 or over 14.

Of which 0 to 6.9 is acidic , 7 is neutral , and 7.1 to 14 is basic. Anything underneath 7.0 is acidic, and anything above 7.0 is basic, or essential.

So By using ph scale the acidic and basic nature of the solution can be measured.

So the terms used are acidity and basicity.

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kodGreya [7K]

Answer:

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3 years ago

Read 2 more answers

How many grams of sodium acetate ( molar mass = 83.06 g/mol ) must be added to 1.00 Liter of a 0.200 M acetic acid solution to m

Pie

Answer: The mass of sodium acetate that must be added is 30.23 grams

Explanation:

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}$

Molarity of acetic acid solution = 0.200 M

Volume of solution = 1 L

Putting values in above equation, we get:

$0.200M=\frac{\text{Moles of acetic acid}}{1L}\\\\\text{Moles of acetic acid}=(0.200mol/L\times 1L)=0.200mol$

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

$pH=pK_a+\log(\frac{[\text{salt}]}{[\text{acid}]})$

$pH=pK_a+\log(\frac{[CH_3COONa]}{[CH_3COOH]})$

We are given:

$pK_a$ = negative logarithm of acid dissociation constant of acetic acid = 4.74

$[CH_3COONa]=?mol$

$[CH_3COOH]=0.200mol$

pH = 5.00

Putting values in above equation, we get:

$5=4.74+\log(\frac{[CH_3COONa]}{0.200})$

$[CH_3COONa]=0.364mol$

To calculate the mass of sodium acetate for given number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Molar mass of sodium acetate = 83.06 g/mol

Moles of sodium acetate = 0.364 moles

Putting values in above equation, we get:

$0.364mol=\frac{\text{Mass of sodium acetate}}{83.06g/mol}\\\\\text{Mass of sodium acetate}=(0.364mol\times 83.06g/mol)=30.23g$

Hence, the mass of sodium acetate that must be added is 30.23 grams

7 0

3 years ago

During chemical reactions the bonds between atoms break and new bonds form. Energy must be absorbed to break a bond, so breaking

ss7ja [257]

Answer:

The equation is: CuCO3(s) → CuO(s) + CO2(g)

Explanation:

Copper carbonate decomposes at high temperatures, generating the products carbon dioxide (CO2) and copper oxide (II) CuO. In this type of decomposition reaction, a substance is broken generating two different compounds.

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3 years ago

Which statement below is not true?

Verizon [17]

Hi I believe the answer is B
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7 0

3 years ago

At 9°C a gas has a volume of 6.17 L. What is its volume when the gas is at standard temperature?

Alex17521 [72]

Answer:

V₂ = 5.97 L

Explanation:

Given data:

Initial temperature = 9°C (9+273 = 282 K)

Initial volume of gas = 6.17 L

Final volume of gas = ?

Final temperature = standard = 273 K

Solution:

Formula:

The Charles Law will be apply to solve the given problem.

According to this law, 'the volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure'

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁

V₂ = 6.17 L × 273K / 282 k

V₂ = 1684.41 L.K / 282 K

V₂ = 5.97 L

5 0

3 years ago

Which two terms describe the pH scale​

Which two terms describe the pH scale