When 6 grams of zinc are dropped into excess hydrochloric acid, how many grams of zinc chloride will be produced?

The mass of zinc chloride produced will be 12.402 grams.

Explanation:

To calculate the number of moles, we use the equation:

 .....(1)

Given mass of zinc = 6 g

Molar mass of zinc = 65.38 g/mol

Putting values in above equation, we get:

For the reaction of zinc and hydrochloric acid, the chemical equation follows:

Hydrochloric acid is given in excess, so it is considered as an excess reagent. Zinc is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

1 mole of zinc metal produces 1 mole of zinc chloride.

So, 0.091 moles of zinc metal will produce = of zinc chloride.

Now, calculating the mass of zinc chloride produced, we use equation 1.

Moles of zinc chloride = 0.091 moles

Molar mass of zinc chloride = 136.286 g/mol

Putting values in equation 1, we get:

Hence, the mass of zinc chloride produced will be 12.402 grams.

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the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).