3 years ago

Write, Balance and Label the type of reaction: Potassium Hydroxide plus phosphoric acid yields potassium phosphate and water.

1 answer:

7 0

In order to balance this, you have to count each element where the elements in the reactants side and the product side should have equal number of molecules. The balanced reaction is as follows:

KOH + H3PO4 = KH2PO4 +H2O

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3 years ago

How many milliliters of an aqueous solution of 0.193 M potassium carbonate is needed to

VikaD [51]

Answer:

295 mL

Explanation:

Given data:

Volume needed = ?

Molarity of solution = 0.193 M

Mass of salt = 7.90 g

Solution:

Molarity = number of moles of solute / volume in L

Number of moles of salt = mass/molar mass

Number of moles of salt = 7.90 g/ 138.205 g/mol

Number of moles = 0.057 mol

Volume needed:

Molarity = number of moles / volume in L

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Volume in L = 0.057 mol / 0.193 M

Volume in L = 0.295 L

L into mL

0.295 L × 1000 mL/1L

295 mL

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3 years ago