Which of the following sequences lists the substances in order of increasing solubility?

CaCO3 < KHCO3 < NaHCO3
NaHCO3 < KHCO3 < CaCO3
KHCO3 < NaHCO3 < CaCO3
CaCO3 < NaHCO3 < KHCO3

Correct answer: CaCO3 < KHCO3 < NaHCO3

Solution

Calcium carbonate is sparingly soluble, potassium bicarbonate is more soluble than calcium carbonate, and sodium bicarbonate is the most soluble among the three. Hence the increasing order is CaCO3 < KHCO3 < NaHCO3.

Related JEE Main Chemistry questions

For the gaseous reaction \(\mathrm{CO(g) + \tfrac{1}{2}O_2(g) \rightleftharpoons CO_2(g)}\), what is the relation between \(K_p\) and \(K_c\)?
For the gaseous equilibrium \(\mathrm{PCl_5 \rightleftharpoons PCl_3 + Cl_2}\), how does the degree of dissociation \((\alpha)\) depend on the equilibrium pressure \((p)\)?
A movable-piston vessel of volume 20 L at 400 K contains \(\mathrm{CO_2(g)}\) at a pressure of 0.4 atm along with excess \(\mathrm{SrO}\) (ignore the solid’s volume). The piston is pushed inward, reducing the container volume. What is the largest volume the vessel can have when the \(\mathrm{CO_2}\) pressure reaches its highest value?\n\nGiven: \(\mathrm{SrCO_3(s) \rightleftharpoons SrO(s) + CO_2(g)}\), \(K_p = 1.6\) atm
For the equilibrium \(\mathrm{C(s) + CO_2(g) \rightleftharpoons 2CO(g)}\), the value of \(K_p\) is 63 atm at 1000 K. If, at equilibrium, the partial pressure of \(\mathrm{CO}\) is ten times the partial pressure of \(\mathrm{CO_2}\), what is the total pressure of the gaseous mixture at equilibrium?
Which of the following statements is incorrect?
For the gas-phase reaction CO(g) + \tfrac{1}{2}O_2(g) \rightleftharpoons CO_2(g), the relationship between equilibrium constants in terms of pressure and concentration is determined by \(\Delta n_g\). Since \(\Delta n_g = 1 - (1 + 0.5) = -0.5\), which expression is correct?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →