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3 years ago

A solution has a [H+] = 0.00025. What is the pH of this solution?

Chemistry

1 answer:

Mamont248 [21]3 years ago

8 0

Answer: 3.60

Explanation:

pH is the negative logarithm of hydrogen ion concentration of a solution.

Mathematically, pH = -log(H+)

Since [H+] = 0.00025

Then, pH = - log (0.00025)

pH = - (-3.60)

pH = 3.6 (since the two minus signs will cancel out)

Thus, the pH of the solution is 3.6, making it an acidic solution

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Which of the changes listed below would shift this reaction to the right?

nasty-shy [4]

Answer:

D: Increase of pressure

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3 years ago

Which of the following pairs does not share the same empirical formula?

Svetradugi [14.3K]

PbCl2 and PbCl4

Empirical formula is when the molecular formula is reduced (each element) by the same number until you are unable to do so any further.
CH2O cannot be further reduced, but C3H6O3 can all be divided by 3 making it CH2O (same empirical formula)

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3 years ago

Read 2 more answers

The proposed mechanism for a reaction is 1. ClO-(aq) + H2O(l) => HClO(aq) + OH-(aq) SLOW 2. I-(aq) + HClO(aq) => HIO(aq) +

HACTEHA [7]

Answer:

The correct answer is option A.

Explanation:

Step 1 : Slow

$ClO^-(aq) + H_2O(l)\rightarrow HClO(aq) + OH^-(aq)$

Step 2: Fast

$I^-(aq) + HClO(aq)\rightarrow HIO(aq) + Cl^-(aq)$

Step 3: Fast

$OH^-(aq) + HIO(aq)\rightarrow H_2O(l) + IO^-(aq)$

When there is a recation which is taking place in a more that single steps than the rate of the reaction is determined by the slowest step occurring in the reaction mechanism.

So, according to question step 1 is slow step which means that rate of the reaction will be :

$R=k[ClO^-][H_2O]$

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4 years ago

What is the formula of titanium(IV) bromide?

Anna [14]

Answer:

$\boxed{\text{SnBr}_{4}}$

Explanation:

The name tells you that this is a binary compound (contains two elements).

It contains a metal and a nonmetal, so it is a binary ionic compound. The general rule is:

Name of compound = name of metal name of ion (two words)

Name of metal = tin(IV), so the tin ion has a charge of 4+

Name of ion = bromide. Br is in Group 17, so bromide ion has charge of 1-.

$\rm Sn$^{4+}$ + 4Br$^{-} \longrightarrow \,$ SnBr$_{4}$\\\\\text{The formula is} \boxed{\textbf{SnBr}_{4}}$

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4 years ago

When discussing discordant and harmonious sound waves, which statement is false?

notka56 [123]

When discussing discordant and harmonious sound waves, the statement tat is false is : if the original waves combine to form irregular displacement of air, the sound will be discordant. The fact is, irregular displacement of air does not guarantee sound discordance

hope this helps

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3 years ago