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Svetach [21]
3 years ago
6

As a technician in a large pharmaceutical research firm, you need to produce 300. mL of 1.00 M a phosphate buffer solution of pH

= 7.36. The pKa of H2PO4− is 7.21. You have 2.00 L of 1.00 M KH2PO4 solution and 1.50 L of 1.00 M K2HPO4 solution, as well as a carboy of pure distilled H2O. How much 1.00 M KH2PO4 will you need to make this solution?
Chemistry
1 answer:
tamaranim1 [39]3 years ago
4 0

Answer:  pH = 7.36. The pKa of H2PO4− is 7.21.

Explanation:

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The teacher shows students a pictorial model of an atom. Which element is
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Explanation:

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Rocks are solids composed of one or more minerals true or false
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Use the molar bond enthalpy data in the table to estimate the value of Δ∘rxn
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Answer:

ΔH°rxn = - 433.1 KJ/mol

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∴ ΔH°Cl2(g) = 0 KJ/mol.....pure element in its reference state

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⇒ ΔH°rxn = - 433.1 KJ/mol

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1. What is the best means to separate ammonium chloride, sand, and zinc chloride? And a
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1. A mixture of ammonium chloride, sand, and zinc chloride should be separated by sublimation.

2. A mixture of zinc chloride and silver chloride should be separated through crystallization.

<h3>What is a separation technique?</h3>

A separation technique can be defined as a technique that is typically used to separate or convert two (2) or more mixture and solution of chemical substances into distinct product such as chemical compounds or elements.

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In Chemistry, there are various types of separation technique used for the separation of mixtures or solutions and these include:

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In this scenario, the most effective and efficient means to separate a mixture of ammonium chloride, sand, and zinc chloride is by sublimation from solid to gas state.

On the other hand, the best means to separate a mixture of zinc chloride and silver chloride is through crystallization.

Read more on crystallization here: brainly.com/question/4980962

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