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Recent questions tagged chemistry

$Mg_3N_2+6D_2O\rightarrow x$

asked Nov 29, 2013 by sreemathi.v

1 answer

$CaO+D_2O\rightarrow Ca(OD)_2\downarrow$

asked Nov 29, 2013 by sreemathi.v

1 answer

Water gas has

asked Nov 29, 2013 by sreemathi.v

1 answer

The empirical formulae for zeolites

asked Nov 29, 2013 by sreemathi.v

1 answer

Orthosilicates have

asked Nov 29, 2013 by sreemathi.v

1 answer

$2R-Cl+Si\overset{Cu/300^{\large\circ}C}{\rightarrow}Organosilicon$

asked Nov 29, 2013 by sreemathi.v

1 answer

When $SiO_2$ is beated with C in an electric formula

asked Nov 28, 2013 by sreemathi.v

1 answer

Quartz is form of

asked Nov 28, 2013 by sreemathi.v

1 answer

The formulae of ferric alum

asked Nov 28, 2013 by sreemathi.v

1 answer

$B_2H_6+HCl\overset{catalyst}{\rightarrow}B_2H_5Cl+H_2\uparrow$.The catalyst is

asked Nov 28, 2013 by sreemathi.v

1 answer

When $B_2H_6$ reacts with $H_2O$ or alkalies and produces $x+y$ is liberated.The $y$ liberated is

asked Nov 28, 2013 by sreemathi.v

1 answer

When $B_2H_6$ reacts with $H_2O$ or alkalies and produces $x+y$ is liberated.The $x$ is

asked Nov 28, 2013 by sreemathi.v

1 answer

Borazole is also known as

asked Nov 28, 2013 by sreemathi.v

1 answer

There are how many Boron atoms in metaborate ion?

asked Nov 28, 2013 by sreemathi.v

1 answer

The colour of cobalt metaborate is

asked Nov 28, 2013 by sreemathi.v

1 answer

$CoSO_4+B_2O_3\rightarrow$(Bead).From this equation the Bead is

asked Nov 28, 2013 by sreemathi.v

1 answer

Refer to the below equation :

asked Nov 28, 2013 by sreemathi.v

1 answer

Refer to the below equation :

asked Nov 28, 2013 by sreemathi.v

1 answer

$5H_2O+NaB_4O_7+2HCl\rightarrow 2NaCl+x$. In this equation the $x$ is

asked Nov 28, 2013 by sreemathi.v

1 answer

$HBr$ is weaker acid than HI due to

asked Nov 28, 2013 by sreemathi.v

1 answer

The reactivity $Na_2O$ going to $K_2O$

asked Nov 28, 2013 by sreemathi.v

1 answer

Silicon belongs to which category?

asked Nov 28, 2013 by sreemathi.v

1 answer

Each carbon in diamond is __________ hybridization

asked Nov 28, 2013 by sreemathi.v

1 answer

Oxygen belongs to which category?

asked Nov 28, 2013 by sreemathi.v

1 answer

The stability of which is correct ?

asked Nov 28, 2013 by sreemathi.v

1 answer

Flurine forms how many salts with xenon?

asked Nov 28, 2013 by sreemathi.v

1 answer

Graphite's lubricant nature in moon

asked Nov 28, 2013 by sreemathi.v

1 answer

With excess of $Cl_2$ ammonia forms

asked Nov 28, 2013 by sreemathi.v

1 answer

$H_2B_4O+5H_2O\rightarrow x$. $x$ is

asked Nov 28, 2013 by sreemathi.v

1 answer

Hydrolysis of chloroform with aqueous KOH gives

asked Nov 28, 2013 by sreemathi.v

1 answer

Which of the following doesn't participate in the solvay's process for manufacture of $Na_2CO_3$

asked Nov 28, 2013 by sreemathi.v

1 answer

Silica is soluble in

asked Nov 28, 2013 by sreemathi.v

1 answer

The element which can displace 3 other halogens from their compounds

asked Nov 28, 2013 by sreemathi.v

1 answer

The $pK_a$ of weak acid (HA) is 4.5 . The $pOH$ of an aqueous buffered solution of HA in which 50% of acid is ionized is

asked Nov 27, 2013 by mosymeow_1

1 answer

Which of the following ionic species has the greatest protons affinity to form stable compound?

asked Nov 27, 2013 by mosymeow_1

2 answers

The solubility of $A_2X_3$ is y mol $dm^{-3}$. Its solubility product is

asked Nov 27, 2013 by mosymeow_1

1 answer

When $0.1\; mol$ of $CH_3NH_2$ (ionisation constant, $K_b = 5 \times 10^{-4}$) is mixed with $0.08\;mol\; HCl$ and the volume is made up to $1\; L$ find the [$H^+$] of resulting solution,

asked Nov 27, 2013 by mosymeow_1

1 answer

$H_3BO_3$ is

asked Nov 27, 2013 by mosymeow_1

2 answers

The $pH$ of $\frac{M}{100}$ NaOH solution is:

asked Nov 27, 2013 by mosymeow_1

1 answer

Ammonium acetate which is 0.01 M, is hydrolysed to 0.001 M concentration. Calculate the change in $pH$ in 0.001 M solution, if initially $pH = pK_a$

asked Nov 27, 2013 by mosymeow_1

1 answer

When solid lead iodide is added to water, the equilibrium concentration of $I^-$ becomes $2.6 \times 10^{-3}$M. What is the $K_{sp}$ for $PbI_2$

asked Nov 27, 2013 by mosymeow_1

1 answer

For a concentrated solution of a weak electrolytic $A_xB_y$ of concentration C, the degree of dissociation $\alpha$ is given by

asked Nov 27, 2013 by mosymeow_1

1 answer

A solution has $pH$ = 5 is to be diluted 100 times then it will become

asked Nov 27, 2013 by mosymeow_1

1 answer

$K_{sp}$ of $Mg(OH)_2$ is $1 \times 10^{-12}$, 0.01 M $Mg^{+}$ will precipitate at the limiting $pH$ of

asked Nov 27, 2013 by mosymeow_1

1 answer

Equal volume of the follwing $Ca^{2+}$ and $F^-$ solutions are mixed. In which of the follwing solutions will precipitation occur?

asked Nov 27, 2013 by mosymeow_1

1 answer

What is the correct relationship between the $pH$s of isomolar solutions of sodium oxide ($pH_1$), sodium sulphide ($pH_2$), sodium selenide ($pH_3$) and sodium telluride ($pH_4$)?

asked Nov 27, 2013 by mosymeow_1

1 answer

The rapid change of $pH$ near the stoichiometric point of an acid-base titration is the basis of indicator detection. $pH$ of the solution is related to ratio of the concentration of the conjugated acid(HIn) and base (In) form of the indicator by the expression

asked Nov 27, 2013 by mosymeow_1

1 answer

The $pH$ value of gastric juice in human stomach is about 1.8 and in the small intestine it is about 7.8. The $pK_a$ value of aspirin is 3.5. Aspirin will be

asked Nov 27, 2013 by mosymeow_1

1 answer

If equilibrium constant of the reaction of weak acid $HA$ with $NaOH$ is $10^9$, then $pH$ of $0.1\; M\; NaA$ is

asked Nov 27, 2013 by mosymeow_1

1 answer

If freezing point of 0.1 M aqueous weak monobasic acid is $-0.2046^\circ C$, then $pH$ of solution is [$K_f (H_2O) = 1.86 kg mol^{-1}$]

asked Nov 27, 2013 by mosymeow_1

1 answer

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