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Questions >> SAT >> Chemistry >> chemical equilibrium

At the boiling point of a liquid its ________ becomes equal to the atmospheric pressure.

answered Dec 11, 2018 by meena.clay6

1 answer

The pH of pure water at $80^\circ C$ will be

answered Dec 11, 2018 by meena.clay6

1 answer

Equal amounts of reactants are poured into a suitable container. Given sufficient time, the reactants may be converted almost entirely to products if:

answered Dec 11, 2018 by meena.clay6

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$K_{sp}$ of $AglO_3$ is $1 \times 10^{4}$ at a given temperature what is the mass of $AglO_3$ in 100 ml of its saturated solution ?

answered Dec 11, 2018 by meena.clay6

1 answer

Number of $H^{+ ions}$ present in 500 ml of lemon juice of $P^{H}=3$ is

answered Dec 11, 2018 by meena.clay6

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A vessel contains $CO_2$ at $1000\;K$ temperature with pressure $0.5$ atm. Some of $CO_2$ is converted in to CO on addition of graphite . If total pressure at equilibrium is $0.8$ atm the value of $K_p$ is

answered Dec 11, 2018 by meena.clay6

1 answer

Calculate the pH of the solution when $0.1\; M\; CH_3 COOH (50 ml)$ and $0.1\; M\; NaOH (50 ml)$ are mixed, $[Ka (CH_3COOH)=10^{-5}]$

asked Nov 30, 2018 by meena.clay6

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$P^H$ of $0.1\;M$ Solution of weak acid is 3. The value of ionisation constant $Ka$ of acid is

answered Nov 30, 2018 by meena.clay6

1 answer

Three reaction involving $H_2PO_4$ are given below $(i)H_3PO_4+H_2O \rightleftharpoons H_3O^{+}+H_2PO_4^{-} \\ (ii)H_2PO_4+H_2O \rightleftharpoons HPO_{4}^{-2}+H_3^{+}O \\ (iii)H_2PO_4+OH \rightleftharpoons H_3PO_4+O^{2-}$ In which of the above does $H_2PO_4$ act as an acid

answered Nov 30, 2018 by meena.clay6

1 answer

What can affect the magnitude of equilibrium constant Kp of a reversible gaseous reaction

answered Nov 26, 2018 by meena.clay6

1 answer

The relation between $K_c$ and $K_p$ is

answered Nov 26, 2018 by meena.clay6

1 answer

A basic Buffer solution can be prepared by mixing

answered Nov 26, 2018 by meena.clay6

1 answer

A large value of Kc means that at equilibrium

answered Nov 26, 2018 by meena.clay6

1 answer

In an exothermic reversible reaction increase in temp shifts the equilibrium to

answered Nov 26, 2018 by meena.clay6

1 answer

A reaction is reversible because

answered Nov 26, 2018 by meena.clay6

1 answer

Which of the following weakest ?

answered Nov 26, 2018 by meena.clay6

1 answer

$EDTA$ is a/an

answered Nov 26, 2018 by meena.clay6

1 answer

With increase in temperature , ionic product of water .

answered Nov 26, 2018 by meena.clay6

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One of the following is a bronsted acid hot not a bronsted base

answered Nov 26, 2018 by meena.clay6

1 answer

Conjugate base of hydrazonic acid is :

answered Nov 23, 2018 by meena.clay6

1 answer

Which of the following is a base according to lowry- bronsted concept?

answered Nov 23, 2018 by meena.clay6

1 answer

The solubility product of $AgCl$ is $4 \times 10^{-18}$ at $298\;k$ . The solublity of AgCl in $0.04\;MCaCl_2$ will be

answered Nov 23, 2018 by meena.clay6

1 answer

A certain buffer solution contains equal concentration of $X^{-}$ and $HX.K_4$ for $HX$ is $10^{-4}$ . The $p^{H}$ of buffer is

answered Nov 22, 2018 by meena.clay6

1 answer

$P^{H}$ of $10^{-3}\;M$ solution of HCL in water is

answered Nov 22, 2018 by meena.clay6

1 answer

Equal volumes of two solution of $p^H3$ and 4 are mixed The $p^{H}$ of the resulting solution will be

answered Nov 22, 2018 by meena.clay6

1 answer

Process by which ammonia is produced by reaction of nitrogen with hydrogen at 200 atm pressure and in presence of a catalyst is called

answered Nov 19, 2018 by meena.clay6

1 answer

Reactions in which reactants react to form products and simultaneously products reverse back in to reactants are called

answered Nov 19, 2018 by meena.clay6

1 answer

Rate at which a substance reacts is directly proportional to its

answered Nov 19, 2018 by meena.clay6

1 answer

Which of following is used as catalyst in contact process?

answered Nov 19, 2018 by meena.clay6

1 answer

State at which forward and reverse reactions occur at same rate is

answered Nov 19, 2018 by meena.clay6

1 answer

Equilibrium constant can be used to determine equilibrium concentration of equilibrium mixture knowing the

answered Nov 19, 2018 by meena.clay6

1 answer

In reverse reaction $SO_3$ decomposes in to

answered Nov 19, 2018 by meena.clay6

1 answer

Due to high concentration of reactants, rate of forward reaction is

answered Nov 19, 2018 by meena.clay6

1 answer

Rate at which reaction proceeds is directly proportional to

answered Nov 16, 2018 by meena.clay6

1 answer

For the following reaction in gaseous phase $CO+\large\frac{1}{2}$ $O_2 \rightleftharpoons CO_2$ and $\large\frac{K_c}{K_p}$ is

answered Nov 16, 2018 by meena.clay6

1 answer

$P^H$ of $0.1\;M$ Solution of weak acid is 3. The value of ionisation constant $Ka$ of acid is

answered Nov 16, 2018 by meena.clay6

1 answer

The $p^{Ka}$ of a weak acid $HA$ is $4.80$ The $pK_b$ of a weak base BOH is $4.78$ .The $p^{H}$ of an aqueous solution of the corrosponding salt $BA$ will be

answered Nov 16, 2018 by meena.clay6

1 answer

Species acting both as bronsted acid and a base is

answered Nov 16, 2018 by meena.clay6

1 answer

Ammonium ion is

answered Nov 16, 2018 by meena.clay6

1 answer

Water is a

answered Nov 16, 2018 by meena.clay6

1 answer

For the reaction $2NO_{(2g)} \rightleftharpoons 2NO_{(g)}+O_{2(g)} \qquad K_c=1.8 \times 10^{-6}$ at $184^{\circ} c R=0.0831\;KJ/mol\;K$ When $K_p$ and $K_c$ are compared at $184^{\circ}$ it is found that :

answered Nov 15, 2018 by meena.clay6

1 answer

Three reaction involving $H_2PO_4$ are given below $(i)H_3PO_4+H_2O \rightleftharpoons H_3O^{+}+H_2PO_4^{-} \\ (ii)H_2PO_4+H_2O \rightleftharpoons HPO_{4}^{-2}+H_3^{+}O \\ (iii)H_2PO_4+OH \rightleftharpoons H_3PO_4+O^{2-}$ In which of the above does $H_2PO_4$ act as an acid

answered Nov 15, 2018 by meena.clay6

1 answer

A vessel contains $CO_2$ at $1000\;K$ temperature with pressure $0.5$ atm. Some of $CO_2$ is converted in to CO on addition of graphite . If total pressure at equilibrium is $0.8$ atm the value of $K_p$ is

answered Nov 15, 2018 by meena.clay6

1 answer

The following equilibrium constant are given : $N_2+3H_2 \rightleftharpoons 2NH_3;K_1 \\ N_2+O_2 \rightleftharpoons 2NO;K_2\\H_2+1/2O_2 \rightleftharpoons +H_2OK_3$ The equilibrium constants for the oxidation of $NH_3$ by oxygen to given NO is :

answered Nov 14, 2018 by meena.clay6

1 answer

Calculate the pH of the solution when $0.1\; M\; CH_3 COOH (50 ml)$ and $0.1\; M\; NaOH (50 ml)$ are mixed, $[Ka (CH_3COOH)=10^{-5}]$

answered Nov 13, 2018 by meena.clay6

1 answer

Equilibrium constant changes with

answered Nov 13, 2018 by meena.clay6

1 answer

Equilibriam are those in which the reactants and products are present in more than phases:

answered Nov 13, 2018 by meena.clay6

1 answer

If, in the reaction $N_2O_4 \equiv 2NO_2$ , x is that part of $N_2O_4$ which dissociates, then the number of molecules at equilibrium will be

answered Nov 1, 2018 by meena.p

1 answer

Amines behave as

answered Nov 1, 2018 by meena.p

1 answer

What is the best description of the change that occurs when $Na_2O(s)$ is dissolved in water?

answered Nov 1, 2018 by meena.p

1 answer

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