Which of the following has the highest pH?

1 answer:

8 0

The answer is 0.10 M NaOH. The NaCl is neutral. The HCl is acid. NaOH and NaNO2 are base. The base has higher pH than acid. The NaNO2 is weak base while NaOH is strong base. So the NaOH has higher pH than NaNO2.

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Write the chemical equations for the neutralization reactions that occurred when hcl and naoh were added to the buffer solution.

irga5000 [103]

A base and an Acid always react to form a salt and water

So, HCl + NaOH —> NaCl + HOH

5 0

3 years ago

What type of reaction is: sulfuric acid + potassium hydroxide -> potassium sulfate + water?

aleksley [76]

Answer:

Double replacement reaction

Explanation:

Now, let us first write the reaction equation properly:

H₂SO₄ + 2KOH ⇒ K₂SO₄ + 2H₂O

The above reaction is a neutralization reaction between an acid and a base whose product gives salt and water only at most instances.

From here, we can observe that the species displaces on another in their ionic state. Hydrogen replaces potassium and water is produced. Potassium combines chemically with sulfate ions to give the salt of potassium.

4 0

3 years ago

1. A sample of polystyrene is found to have a number-average molar mass of 89,440 g mol−1 . Neglecting contributions from end gr

Snowcat [4.5K]

Answer:

The weight-average molar mass of polystyrene is 134,160 g/mol.

Explanation:

Molar mass of the monomer styrene , $C_8H_8$ , M=104 g/mol