Which statement is true for a solution when its concentration of hydronium ions increases?

Chemistry

2 answers:

Zielflug [23.3K]4 years ago

7 0

Answer:

Its pH value decreases.

Explanation:

∵ pH = - log[H₃O⁺]

As, concentration of hydronium ions increases, pH value decreases and the solution be more acidic.

So, the right choice is: Its pH value decreases.

Alexxx [7]4 years ago

5 0

Answer: Its pH value decreases.

Explanation: pH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydronium ion concentration. Acids have pH ranging from 1 to 6.9 and bases have pH ranging from 7.1 to 14.

$pH=-\log [H_3O^+]$

$pH=log\frac {1}{H_3O^+}$

Thus as pH and $H_3O^+$ are inversely related, a solution having lower pH will have more amount of $H_3O^+$ concentration. And a solution having more pH will have less amount of $H_3O^+$ concentration.

Thus when concentration of hydronium ions increases, the pH of the solution decreases and the solution becomes more acidic.

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A sample of pure lithium carbonate contains 18.8% lithium by mass. What is the % lithium by mass in a sample of pure lithium car

VashaNatasha [74]

Answer:

There is 18.8% lithium by mass in second sample

Explanation:

Both the two samples are pure lithium carbonate. So % lithium by mass will be same in both samples. This can be proved mathematically as follows-

Let's assume weight of first sample is x g

So, 100 g of sample contains 18.8 g of lithium

Hence, x g of sample contains $(\frac{18.8}{100}\times x)$ g of lithium