Give the balanced equation for each of the following. a. The combustion of ethanol \(\left(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\right)\) forms carbon dioxide and water vapor. A combustion reaction refers to a reaction of a substance with oxygen gas. b. Aqueous solutions of lead(II) nitrate and sodium phosphate are mixed, resulting in the precipitate formation of lead(II) phosphate with aqueous sodium nitrate as the other product. c. Solid zinc reacts with aqueous HCl to form aqueous zinc chloride and hydrogen gas. d. Aqueous strontium hydroxide reacts with aqueous hydrobromic acid to produce water and aqueous strontium bromide.

Short Answer

Expert verified
a. \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH} + 3 \mathrm{O}_{2} \rightarrow 2 \mathrm{CO}_{2} + 3 \mathrm{H}_{2}\mathrm{O}\) b. \(3 \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} + 2 \mathrm{Na}_{3}\mathrm{PO}_{4} \rightarrow \mathrm{Pb}_{3}\left(\mathrm{PO}_{4}\right)_{2} + 6 \mathrm{NaNO}_{3}\) c. \(\mathrm{Zn} + 2 \mathrm{HCl} \rightarrow \mathrm{ZnCl}_{2} + \mathrm{H}_{2}\) d. \(\mathrm{Sr}\left(\mathrm{OH}\right)_{2} + 2 \mathrm{HBr} \rightarrow 2 \mathrm{H}_{2}\mathrm{O} + \mathrm{SrBr}_{2}\)

Step by step solution

01

a. Combustion of ethanol

Write down the unbalanced equation of combustion of ethanol reacting with oxygen gas to form carbon dioxide and water vapor. The unbalanced equation is: \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH} + \mathrm{O}_{2} \rightarrow \mathrm{CO}_{2} + \mathrm{H}_{2}\mathrm{O}\) Now, balance the equation by adjusting the coefficients: \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH} + 3 \mathrm{O}_{2} \rightarrow 2 \mathrm{CO}_{2} + 3 \mathrm{H}_{2}\mathrm{O}\)
02

b. Reaction of lead(II) nitrate and sodium phosphate

Write down the unbalanced equation of aqueous solutions of lead(II) nitrate and sodium phosphate reacting to form lead(II) phosphate precipitate and aqueous sodium nitrate. The unbalanced equation is: \(\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} + \mathrm{Na}_{3}\mathrm{PO}_{4} \rightarrow \mathrm{Pb}_{3}\left(\mathrm{PO}_{4}\right)_{2} + \mathrm{NaNO}_{3}\) Now, balance the equation by adjusting the coefficients: \(3 \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} + 2 \mathrm{Na}_{3}\mathrm{PO}_{4} \rightarrow \mathrm{Pb}_{3}\left(\mathrm{PO}_{4}\right)_{2} + 6 \mathrm{NaNO}_{3}\)
03

c. Reaction of solid zinc with aqueous HCl

Write down the unbalanced equation of solid zinc reacting with aqueous HCl to form aqueous zinc chloride and hydrogen gas. The unbalanced equation is: \(\mathrm{Zn} + \mathrm{HCl} \rightarrow \mathrm{ZnCl}_{2} + \mathrm{H}_{2}\) Now, balance the equation by adjusting the coefficients: \(\mathrm{Zn} + 2 \mathrm{HCl} \rightarrow \mathrm{ZnCl}_{2} + \mathrm{H}_{2}\)
04

d. Reaction of aqueous strontium hydroxide with aqueous hydrobromic acid

Write down the unbalanced equation of aqueous strontium hydroxide reacting with aqueous hydrobromic acid to produce water and aqueous strontium bromide. The unbalanced equation is: \(\mathrm{Sr}\left(\mathrm{OH}\right)_{2} + \mathrm{HBr} \rightarrow \mathrm{H}_{2}\mathrm{O} + \mathrm{SrBr}_{2}\) Now, balance the equation by adjusting the coefficients: \(\mathrm{Sr}\left(\mathrm{OH}\right)_{2} + 2 \mathrm{HBr} \rightarrow 2 \mathrm{H}_{2}\mathrm{O} + \mathrm{SrBr}_{2}\)

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Most popular questions from this chapter

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