SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How many HCl molecules do you need to balance this equation? Mg + ____ HCl
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1
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2
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3
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4
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Explanation:
Detailed explanation-1: -To balance the hydrogen atoms, 2 should be written as a co-efficient of the hydrogen atoms present on the reactant side. That is, Mg + 2 HCl → MgCl 2 + H 2, now both product and reactant side contains 2 Hydrogens. Hence now the equation is balanced.
Detailed explanation-2: -Balancing Strategies: This is a neutralization reaction, and can also called a double displacement reaction. It’s neutralization because we have a base, the magnesium hydroxide, added to an acid, HCl. The products are a salt (MgCl2) and and water.
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