All categories

3 years ago

A solution of HCl has mc012-1.jpg = 0.01 M. What is the pH of this solution?

Chemistry

2 answers:

marin [14]3 years ago

8 0

Answer: The pH of the 0.02 M HCl solution is 2.

Explanation:

The pH of the solution is defined as negative logarithm of hydrogen ion concentration in a solution.

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

The pH of the HCl solution of 0.01 Molar willbe :

$HCl(aq)\rightarrow H^+(aq)+Cl^-(aq)$

0.01 Molar of HCl will produce 0.01 M of $[H^+]$ ions.

$[H^+]=0.01 M$

$pH=-\log[H^+]=-\log[0.01]=2$

The pH of the 0.02 M HCl solution is 2.

xxMikexx [17]3 years ago

4 0

PH = -log10 [H+]. So anwer 2 pH

You might be interested in

Urea (CH4N2O) is a common fertilizer that can be synthesized by the reaction of ammonia (NH3) with carbon dioxide as follows: 2N

Montano1993 [528]

The question is incomplete, here is the complete question:

Urea (CH₄N₂O) is a common fertilizer that can be synthesized by the reaction of ammonia (NH₃) with carbon dioxide as follows: 2NH₃(aq) + CO₂(aq) → CH₄N₂O(aq) + H₂O(l) In an industrial synthesis of urea, a chemist combines 135.9 kg of ammonia with 211.4 kg of carbon dioxide and obtains 178.0 kg of urea.

Determine the limiting reactant. (express your answer as a chemical formula)

Answer: The limiting reactant is ammonia $(NH_3)$

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For ammonia:

Given mass of ammonia = 135.9 kg = 135900 g (Conversion factor: 1 kg = 1000 g)

Molar mass of ammonia = 17 g/mol

Putting values in equation 1, we get:

$\text{Moles of ammonia}=\frac{135900g}{17g/mol}=7994.12mol$

For carbon dioxide gas:

Given mass of carbon dioxide gas = 211.4 kg = 211400 g

Molar mass of carbon dioxide gas = 44 g/mol

Putting values in equation 1, we get:

$\text{Moles of carbon dioxide gas}=\frac{211400g}{44g/mol}=4804.54mol$

The given chemical reaction follows:

$2NH_3(aq.)+CO_2(aq,)\rightarrow CH_4N_2O(aq.)+H_2O(l)$

By Stoichiometry of the reaction:

2 moles of ammonia reacts with 1 mole of carbon dioxide

So, 7994.12 moles of ammonia will react with = $\frac{1}{2}\times 7994.12=3997.06mol$ of carbon dioxide

As, given amount of carbon dioxide is more than the required amount. So, it is considered as an excess reagent.

Thus, ammonia is considered as a limiting reagent because it limits the formation of product.

Hence, the limiting reactant is ammonia $(NH_3)$

5 0

3 years ago

You are making a 0.2M solution of sodium acetate in the lab. Sodium acetate has a molecular mass of 82.03 g/mol. How many g of s

lyudmila [28]

Answer: The answer can be found on CHEG

Explanation:

7 0

3 years ago

Methane burns in oxygen to produce carbon dioxide and water. Which of the following represents a preliminary, unbalanced equatio

german

The correct option is: CH4 + O2 → CO2 + H2O.

In writing chemical equations, the reactants are usually written to the left of the equation of the reaction while the products are written to the right of the reaction. An arrow pointing in the right direction shows the direction of the reaction. In the question given above, methane and oxygen are the reactants while carbon dioxide and water are the products. The options that states the chemical reaction correctly is option 1.

3 0

3 years ago

Read 2 more answers

How fast does the Earth fly around the sun?

svetoff [14.1K]

about 30 kilometers per second

At what speed does the Earth move around the Sun? (Beginner) Short version: Earth's average orbital speed is about 30 kilometers per second. In other units, that's about 19 miles per second, or 67,000 miles per hour, or 110,000 kilometers per hour (110 million meters per hour).

Hope This Helps! Have A Nice Day!!

7 0

3 years ago

Read 2 more answers

Which of the following statements supports the one gene-one enzyme hypothesis?A) A mutation in a single gene can result in a def

iragen [17]

Answer: its A

Explanation:

4 0

3 years ago

Read 2 more answers