Question

Zinc + hydrochloric acid yields zinc chloride and hydrogen gas. (Zinc has a +2 charge).

• Label what type of reaction (synthesis, decomposition, single replacement, double replacement or combustion) single replacement
• Write the balanced chemical equation Zn+ 2HCL->ZnCI2+ H2
How much of each reactant is nerded to produce 150 grams of hydrogen gas? Please help ASAP

Answer 1

1) the type of reaction is a single replacement.
2) the balanced chemical equation is Zn+ 2HCL->ZnCI2+ H2 because

Zn = 1
H= 1x2=2

C=1x2=2

3)According to the equation, one mole of zinc interacts with two moles of hydrochloric acid to generate one mole of hydrogen gas and one mole of zinc chloride.

Because hydrogen gas has a molar mass of 2 g/mol, 150 g of hydrogen gas is equivalent to 75 moles.

1 mole of hydrogen gas requires 2 moles of hydrochloric acid. As a result, 150 moles of hydrochloric acid are required to generate 75 moles of hydrogen gas.

Because hydrochloric acid has a molar mass of 36.5 g/mol, 150 moles of hydrochloric acid is equivalent to 5475 g or 5.475 kg of hydrochloric acid.

75 moles of zinc are required to generate 75 moles of hydrogen gas. Because zinc has a molar mass of 65.4 g/mol, 75 moles of zinc is equivalent to 4905 g or 4.905 kg of zinc.

As a result, we require 5.475 kg of hydrochloric acid and 4.905 kg of zinc to make 150 grammes of hydrogen gas.