Write an equation to show how hco3− can act as an acid with hs− acting as a base.

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Explanations:- As per Bronsted-Lowry acid-base concept, acids are proton(hydrogen ion) donors and bases are proton acceptors.

Since the bicarbonate ion is acting as an acid, it would donate proton to the bisulfide. The products are carbonate ion and hydrosulfuric acid.

The equation is written as:

 is bicarbonate ion

is bisulfide ion

is carbonate ion and

is hydrosulfuric acid.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o