All categories

4 years ago

What precipitate sometimes forms during an acid-base neutralization reaction?

Chemistry

1 answer:

Tanya [424]4 years ago

8 0

I think the answer is d but I am not for sure

You might be interested in

I NEED HELP!!

solmaris [256]

A simple sugars are formed

5 0

3 years ago

Read 2 more answers

An object was measured by a worker as 17.4cm long, however, the manufacturer specifications list the length of the object at 17.

Olin [163]

Answer:

Percent error = 2.8

Explanation:

Given data;

Actual value = 17.9 cm

Measured value = 17.4 cm

Percent error = ?

Solution:

Formula:

Percent error = [actual value - measured value / actual value] × 100

Now we will put the values in formula:

Percent error = [17.9 cm - 17.4 cm / 17.9 cm] × 100

Percent error = [0.5 cm /17.9 cm] × 100

Percent error = 0.028 × 100

Percent error = 2.8

5 0

3 years ago

A chemist dissolves 697. mg of pure potassium hydroxide in enough water to make up 160. mL of solution. Calculate the pH of the

umka21 [38]

Answer: The pH of the solution is 12.9

Explanation:

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

Given mass of KOH = 697 mg = 0.697 g (Conversion factor: 1 g = 1000 mg)

Molar mass of KOH = 56 g/mol

Volume of solution = 160 mL

Putting values in above equation, we get:

$\text{Molarity of KOH solution}=\frac{0.697\times 1000}{56\times 160}\\\\\text{Molarity of KOH solution}=0.0778M$

1 mole of KOH produces 1 mole of $K^+$ ions and 1 mole of $OH^-$ ions

To calculate the pOH of the solution, we use the equation:

$pOH=-\log[OH^-]$

We are given:

$[OH^-]=0.0778M$

Putting values in above equation, we get:

$pOH=-\log (0.0778)=1.11$

To calculate pH of the solution, we use the equation:

$pH+pOH=14\\pH=14-1.11=12.89$

Hence, the pH of the solution is 12.9

5 0

3 years ago

What discovery led J.J. Thomson to decide that atoms were not indivisible, but are actually composed of smaller parts?

Zarrin [17]

Thomson used a beam of negatively charged particles. Using a beam of particles and detecting the scattering of the particles after they hit gold foil.

7 0

4 years ago

In a titration, what is the name of the substance that is being determined?

solmaris [256]

In a titration, the substance that is unknown and being identified is called analyte. A titration is where a known solution or concentration called the titrant is used to identify and measure an unknown substance which is the analyte.

8 0

3 years ago