Write an equation that shows the formation of a lithium ion from a neutral lithium atom

Chemistry

2 answers:

AleksAgata [21]3 years ago

8 0

Li + e- ===> Li+
it looses its valence electron to form a uni-positive ion

Mariulka [41]3 years ago

5 0

Answer: The equation for this is given below.

Explanation:

Lithium is the 3rd element of the periodic table having electronic configuration of $1s^22s^1$

This element will loose 1 electron to attain stable electronic configuration.

Oxidation reaction is defined as the reaction in which an atom looses its electron to form a positive ion.

The chemical equation for the formation of lithium ion from lithium atom follows:

$Li\rightarrow Li^++e^-$

Hence, lithium ion will form lithium cation by loosing 1 electron as shown in above equation.

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What is the molality of an aqueous KCl solution with a mole fraction of KCl, XKCl = 0.175? (The molar mass of KCl = 74.55 g/mol

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Answer:

The molality of the KCl solution is 11.8 molal

Explanation:

Step 1: Data given

Mol fracrion KCl = 0.175

Molar mass KCl = 74.55 g/mol

Molar mass H2O = 18.02 g/mol

Step 2: Calculate mol fraction H2O

mol fraction H2O = 1 - 0.175 = 0.825

Step 3: Calulate mass of H2O

Suppose the total moles = 1.0 mol

Mass H2O = moles H2O * molar mass

Mass H2O = 0.825 * 18.02 g/mol

Mass H2O = 14.87 grams = 0.01487 kg

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