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2 years ago

9

When chlorine gas is passed through a potassium bromide solution, bromine forms in a potassium chloride solution?

1 answer:

pshichka [43]2 years ago

4 0

Yes because chlorine is more reactive than bromine, it displaces bromine in potassium bromide solution.
Forms bromide *gas* in KCl solution

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You carefully weigh out 16.00 g of CaCO3 powder and add it to 64.80 g of HCl solution. You notice bubbles as a reaction takes pl

bulgar [2K]

Answer: Mass of $CO_2$ produced in this reaction was 6.56 grams

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

$CaCO_3(s)+2HCl(aq)\rightarrow H_2O(l)+CO_2(g)+CaCl_2(aq)$

Mass or reactants = Mass of $CaCO_3$ + mass of $HCl$ = 16.00 + 64.80 = 80.80 g

Mass of products = mass of aqueous solution + mass of $CO_2$ + = 74.24 + x g

Mass or reactants = Mass of products

80.80 g = 74.24 + x g

x = 6.56 g

Thus mass of $CO_2$ produced in this reaction was 6.56 grams

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2 years ago

How can one describe the bond between the two atoms of hydrogen to the one atom of oxygen within a molecule of water (h2o)?

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There are O-H bonds in H2O. They have the intramolecular force of polar covalent bond.

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Gala2k [10]

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A sample of hydrogen gas was collected over water. If the total pressure

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