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3 years ago

Match the formula for the following compound:

Chemistry

2 answers:

VikaD [51]3 years ago

5 0

Answer: $MgSO_4.7H_2O$

Explanation:

$MgSO_4$ is an ionic compound because aluminium element is a metal and hydrogen element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.

The nomenclature of ionic compounds is given by:

1. Positive is written first.

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written in case of $SO_4^{2-}$ is '-ate'.

Hence, the name of $MgSO_4$ is magnesium sulphate.

The water of crystallization is written as hydrate with the number of water molecules. As the name is heptahydrate, that means 7 water molecules are present.

Therefore, the correct answer is $MgSO_4.7H_2O$

tester [92]3 years ago

4 0

valence of magnesium is 2

and valence of sulfate-ion is 2 too

answer: MgSO4•7H2O

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• Preparing 1 liter of 0.1 M KHP you would add 0.1 moles of KHP

Molar mass of KHP(C8H5KO4)

= (12*8) + (5*1) + 39 + (16*4)

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Number of moles = mass/molar mass

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Ba(OH)2 + 2KHP --> Ba(KP)2 + 2H2O

1 mole of Ba(OH)2 reacted with 2 moles of KHP. By stoichiometry,

Number of moles of Ba(OH)2 = 0.0025/2

= 0.00125 mol.

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Answer:

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Explanation:

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0.3226 : 0.4856 Mole ratio---------------------------- (1)

Divide (1) through by 0.3226

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