All categories

2 years ago

3 Which statement is not correct?

Chemistry

1 answer:

Trava [24]2 years ago

5 0

Answer:

D: When the acidity of a solution increases, the pH increases.

Explanation:

It is totally wrong to assert that when the acidity of a solution increases, the pH of the solution will increase

The right answer is that when the acidity of a solution increases, the pH value decreases.

The pH scale records the level of acidity and basicity of a substance.
It runs from 1 to 14
From 7 to 14 signifies increasing basicity
As the acidity of a substance increases, the pH value reduces.
For acids 1 is the highest acidity levels.

You might be interested in

The half-life period for a first order reaction is independent of

maria [59]

I believe the answer is concentration

Sorry if I’m wrong hope this helps

4 0

2 years ago

Read 2 more answers

How many grams of oxygen are there in 45.7 grams of Ba(NO2),?

Flauer [41]

I’m assuming you mean barium nitrite, Ba(NO2)2.

First convert grams of Ba(NO2)2 to moles using the molar mass of Ba(NO2)2. Then use the mole ratio of 4 moles of oxygen per 1 mole of Ba(NO2)2 to convert to moles of oxygen. Then use the molar mass of oxygen to convert to grams of oxygen.

45.7 g Ba(NO2)2 • 1 mol Ba(NO2)2 / 229.35 g Ba(NO2)2 • 4 mol O / 1 mol Ba(NO2)2 • 16.0 g O / 1 mol O = 12.8 g oxygen

4 0

2 years ago

This is an example of a mixture that will separate______.

devlian [24]

B is the correct answer

6 0

3 years ago

Could someone help me with this?

Varvara68 [4.7K]

Solving part-1 only

KMnO_4

Transition metal is Manganese (Mn)

Actually it's the oxidation number of Mn

Let's find how?

$\\ \tt\Rrightarrow x+1+4(-2)=0$

$\\ \tt\Rrightarrow x+1-8=0$

$\\ \tt\Rrightarrow x-7=0$

$\\ \tt\Rrightarrow x=+7$

x is the oxidation number

Purple as per the color of potassium permanganate

$\boxed{\begin{array}{c|c|c}\boxed{\bf Tube} &\boxed{\bf Charge} &\boxed{\bf No\:of\; electrons\: loss}\\ \sf 2 &\sf +6 &\sf 6e^-\\ \sf 3& \sf +2 &\sf 2e- \\ \sf 4 &\sf 4 &\sf 4e^-\end{array}}$

7 0

1 year ago

Which statement is true about the force of gravity? A. The earth has a greater gravitational effect than the sun. B. The moon ha

Georgia [21]

Answer is: D. The sun has a greater gravitational effect than the earth.
Gravity as a force which causes any two bodies to be attracted to each other. The gravitational effect increases as the size of an object increases. Earth s surrounded by its own gravitational field.

3 0

3 years ago