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Marizza181 [45]
3 years ago
8

If a solution is given to you, how will you determine whether it is acid,base or salt​

Chemistry
1 answer:
12345 [234]3 years ago
5 0

Answer:

If your lab has litmus paper, you can use it to determine your solution's pH. When you place a drop of a solution on the litmus paper, the paper changes color based on the pH of the solution. Once the color changes, you can compare it to the color chart on the paper's package to find the pH.

Explanation:

A solution's pH will be a number between 0 and 14. A solution with a pH of 7 is classified as neutral. If the pH is lower than 7, the solution is acidic. When pH is higher than 7, the solution is basic. These numbers describe the concentration of hydrogen ions in the solution and increase on a negative logarithmic scale.

For example, If Solution A has a pH of 3 and Solution B has a pH of 1, then Solution B has 100 times as many hydrogen ions than A and is therefore 100 times more acidic.

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The second-order decomposition of NO2 has a rate constant of 0.255 M-15-1. How much NO2 decomposes in 4.00 s if the initial conc
S_A_V [24]

Answer:

Option D, Concentration of NO2 decomposes after 4.00 s = 0.77 mol

Explanation:

rate\;constant = 0.255\;M^{-1}s{-1}

Time (t) = 4.00\;s

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Integrated law for second order reaction:

\frac{1}{[A]}=\frac{1}{[A]_0} =kt

Where, [A] = Concentration after time, t

[A]0 = Intitial concentration, k = rate constant, t = time

On substituting values in the above

\frac{1}{[A]}=\frac{1}{1.33} =0.255 \times 4.00

\frac{1}{[A]} =1.772

[A] = 0.5644 M

Concentration of NO2 decomposes after 4.00 s = 1.33 - 0.5644 = 0.7656 M

No. of mole = Molarity * volume

                    = 0.7656 * 1

                    = 0.7656 mol 0r 0.77 mol

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Which of the following is the best example of water changing from a liquid to a gas?
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