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Chemistry-

General

Easy

Question

1 mole of $H subscript 2 end subscript blank a n d blank 2 blank m o l e s blank o f blank I subscript 2 end subscript$ are taken initially in a 2 L vessel. The number of moles of $H subscript 2 end subscript$ at equilibrium is 0.2. Then, the number of moles of $I subscript 2 end subscript a n d blank H I$ at equilibrium are

1.2, 1.6
1.8, 1.0
0.4, 2.4
0.8, 2.0

The correct answer is: 1.2, 1.6

$H subscript 2 end subscript I subscript 2 end subscript blank rightwards harpoon over leftwards harpoon blank 2 H I$

Amount of $H subscript 2 end subscript open parentheses a n d blank h e n c e blank I subscript 2 end subscript close parentheses$ consumed
$1 minus 0.2 blank 0.8$

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For the reaction, $H subscript 2 end subscript open parentheses g close parentheses plus C O subscript 2 end subscript open parentheses g close parentheses rightwards harpoon over leftwards harpoon C O open parentheses g close parentheses plus H subscript 2 end subscript O left parenthesis g right parenthesis$ , if the initial concentration of $open square brackets H subscript 2 end subscript close square brackets equals open square brackets C O subscript 2 end subscript close square brackets a n d x$ mol/L of hydrogen is consumed at equilibrium, the correct expression of $K subscript p end subscript$ is

For the reaction, $H subscript 2 end subscript open parentheses g close parentheses plus C O subscript 2 end subscript open parentheses g close parentheses rightwards harpoon over leftwards harpoon C O open parentheses g close parentheses plus H subscript 2 end subscript O left parenthesis g right parenthesis$ , if the initial concentration of $open square brackets H subscript 2 end subscript close square brackets equals open square brackets C O subscript 2 end subscript close square brackets a n d x$ mol/L of hydrogen is consumed at equilibrium, the correct expression of $K subscript p end subscript$ is

Chemistry-General

Of the following which change will shift the reaction towards the product? $I subscript 2 end subscript open parentheses g close parentheses rightwards harpoon over leftwards harpoon 2 I open parentheses g close parentheses comma blank increment H degree subscript r end subscript open parentheses 298 blank K close parentheses equals plus 150 blank k J$

Of the following which change will shift the reaction towards the product? $I subscript 2 end subscript open parentheses g close parentheses rightwards harpoon over leftwards harpoon 2 I open parentheses g close parentheses comma blank increment H degree subscript r end subscript open parentheses 298 blank K close parentheses equals plus 150 blank k J$

Chemistry-General

$K subscript a end subscript$ forHCN is $5 cross times 10 to the power of negative 10 end exponent$ at $25 ℃$ . For maintaining a constant $p H equals 9$ , the volume of 5 M KCN solution required to be added to 10 mL of 2 M HCN solution is

$K subscript a end subscript$ forHCN is $5 cross times 10 to the power of negative 10 end exponent$ at $25 ℃$ . For maintaining a constant $p H equals 9$ , the volume of 5 M KCN solution required to be added to 10 mL of 2 M HCN solution is

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When $C a C O subscript 3 end subscript$ is heated at a constant temperature in a closed container, the pressure due to $C O subscript 2 end subscript$ produced will:

When $C a C O subscript 3 end subscript$ is heated at a constant temperature in a closed container, the pressure due to $C O subscript 2 end subscript$ produced will:

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Which favours the backward reaction in a chemical equilibrium?

Which favours the backward reaction in a chemical equilibrium?

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In $K subscript p end subscript equals K subscript c end subscript open square brackets R T close square brackets to the power of increment n end exponent comma increment n$ may have:

In $K subscript p end subscript equals K subscript c end subscript open square brackets R T close square brackets to the power of increment n end exponent comma increment n$ may have:

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The $left square bracket H to the power of plus end exponent right square bracket$ ion concentration in $0.001 blank M$ acetic acid is $1.34 cross times 10 to the power of negative 4 end exponent g blank i o n divided by l i t r e.$ The $open square brackets H to the power of plus end exponent close square brackets$ ion concentration of $0.164 g blank o f blank C H subscript 3 end subscript C O O N a$ is added to a $l i t r e$ of $0.001 blank M C H subscript 3 end subscript C O O H$ will be:

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Chemistry-General

Which of the following is a buffer?

Which of the following is a buffer?

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$M g to the power of 2 plus end exponent$ is … than $A l to the power of 3 plus end exponent$ .

$M g to the power of 2 plus end exponent$ is … than $A l to the power of 3 plus end exponent$ .

Chemistry-General

parallel

The equilibrium constant $K subscript c end subscript$ for $A open parentheses g close parentheses rightwards harpoon over leftwards harpoon B open parentheses g close parentheses$ is 1.1, Gas $B$ will have molar concentration greater than 1 if :

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Chemistry-General

An aqueous solution contains $N i to the power of 2 plus end exponent comma C o to the power of 2 plus end exponent blank a n d blank P b to the power of 2 plus end exponent$ ions at equal concentrations. The solubility product of $N i S comma P b S blank a n d blank C o S$ in water at $25 ℃$ are $1.4 cross times 10 to the power of negative 24 end exponent comma 3.4 cross times 10 to the power of negative 28 end exponent a n d blank 3 cross times 10 to the power of negative 26 end exponent$ , respectively. Indicate which of these ions will be precipitated first and last when sulphide concentration is progressively increased from zero?

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0.005 M acid solution has 5 pH. The percentage ionisation of acid is

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At 90 $℃$ , pure water has $H subscript 3 end subscript O to the power of plus end exponent$ ion concentration of $10 to the power of negative 6 end exponent m o l divided by L to the power of negative 1 end exponent$ . The $K subscript w end subscript a t blank 90 ℃$ is

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Final pressure is higher than initial pressure of a container filled with an ideal gas at constant temperature. What will be the value of equilibrium constant?

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