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Amanda [17]
4 years ago
10

What is buffers and mention its importance?

Chemistry
1 answer:
GenaCL600 [577]4 years ago
5 0

Answer:

Buffer is the chemical substance that addition of acids and bases, maintaining constant environment,its called Buffer.

Explanation:

  • Buffers are use in the system to maintain the value of pH, and the contain the pH value is not to change.
  • Buffer maintain the body of pH for the optimal activity,and they are solution of pH constant.
  • Buffer in used in the lab and that to maintain growth of the micro tissues and the culture media.
  • Buffer are used in maintain necessary optimal reaction activity,determine the indicator of solution with pH.
  • Buffer capacity is that concentration to the buffering agent, is the very small increase,buffer capacity to the pH is 32% , of the maximum value of pH.
  • Buffers in a acid regions to the desired of that value to the particular buffer agent.
  • Buffers can be made from that a mixture of the base and acid, buffer can be a wide range of the obtained.
  • Buffers that the pH  calculation and they required to performed in the critic acid that the overlap over the buffer range.

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Calculate the mass of water produced when 2.06 g of butane reacts with excess oxygen.
dem82 [27]
2C4H10 + 13O2 = 8CO2 + 10H2O

1. (2.06g C4H10)/(58.12 g/mol C4H10) = 0.035mol C4H10

2. (0.035molC4H10)(10 mol H2O/2mol C4H10) = 0.177mol H2O

3. (0.177mol H2O)(18.01g/mol H2O) = 3.19g H2O
8 0
3 years ago
Coke is an impure form of carbon that is often used in the in- dustrial production of metals from their oxides. If a sample of c
steposvetlana [31]

Answer:

The mass of coke needed to react completely with 1.0 ton of copper(II) oxide is 0.794 Ton.

Explanation:

2CuO+C\rightarrow 2Cu+CO_2

1 Ton = 907185 grams

Mass of copper oxide = 1.0 Ton = 907185 grams

Moles of copper oxide =\frac{907185 g}{79.55 g/mol}=11,403.95 moles

According to reaction, 2 moles of copper oxide reacts with 1 mole of carbon.

Then 11403.95 moles of copper oxide will react with:

\frac{1}{2}\times 11403.95 mol=5,701.98 mol of carbon

Mass of 5,701.98 moles of carbon:

5,701.98 mol\times 12 g/mol=68,423.75 g

Mass of coke = x

Mass of carbon = 68,423.75 g

Percentage of carbon in coke = 95%

95\%=\frac{68,423.75 g}{x}\times 100

x=720,250.09 g=0.794 Ton

The mass of coke needed to react completely with 1.0 ton of copper(II) oxide is 0.794 Ton.

3 0
3 years ago
Which process is used to produce gases from solutions of salts dissolved in water or another liquid?
NemiM [27]

Answer:

Explanation:

Option D electrolysis is the correct answer

3 0
3 years ago
Read 2 more answers
How many mL of a stock 50% (w/v) KNO3 solution are needed to prepare 250 mL of a 20% (w/v) KNO3 solution?
Andre45 [30]

Answer:

100ml of a stock 50% KNO3 solutions are needed to prepare 250ml of a 20% KNO3 solution.

Explanation:

In the given question it is mentioned that

     S1=50%

      V2=250ml

      S2= 20%

We all know that

                     V1S1=V2S2

                     ∴V1=  V2×S2÷S1

                     ∴V1=  V2S2×1/S1

                      ∴V1= 250×20÷50

                       ∴V1= 100ml

 

6 0
3 years ago
The pot shown in the picture is made of two different metals. Why is the handle made of a different metal than the rest of the p
sertanlavr [38]
The rest of the bot needs to be able to heat up to cook ur food but the handles should be cooler so u can touch them
8 0
3 years ago
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