IB DP Chemistry: Acids and bases

Question 1

A substance reacts with dilute acid to produce a flammable gas and a salt solution. Identify the possible substance?

Accepted Answer

Zn

Question 2

Which is the correct balanced chemical equation for the reaction of hydrochloric acid with sodium carbonate?

Accepted Answer

2HCl(aq) + Na2CO3(s) → 2NaCl(aq) + H2O(l) + CO2(g)

Question 3

Which of the following species is the conjugate base of the H2PO4– ion?

Accepted Answer

HPO42–

Question 4

Complete the equation below for the reaction between sulfuric acid and calcium carbonate:

Accepted Answer

CaSO4(aq) + CO2(g) + H2O(l)

Question 5

Which of the following gases is not a by-product of burning fossil fuels?

Accepted Answer

H2

Question 6

Identify the product(s) of the balanced equation for the reaction of nitrogen dioxide with oxygen and water.

Accepted Answer

4HNO3(aq)

Question 7

True or False? In the reaction of phenylamine and water, the water is acting as a Brønsted-Lowry base.

Accepted Answer

False

Question 8

Which of the following compounds formed in a vehicle engine contributes to the formation of acid rain?

Accepted Answer

NO

Question 9

True or False? An amphiprotic species has a lone pair of valence electrons and a hydrogen atom for donation as a proton.

Accepted Answer

True

Questions 9