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4 years ago

1. Concentrated HCl is 11.7M. What is the

Chemistry

1 answer:

SSSSS [86.1K]4 years ago

6 0

Answer:

The concentration is 0,2925M

Explanation:

We use the formula

C initial x V initial = C final x V final

11,7 M x 25 ml = C final x 1000 ml

C final= (11,7 M x 25 ml)/1000 ml = 0, 2925 M

(This formula applies to liquid solutions)

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Help PlS AFAP and thank you so much

Triss [41]

Answer:

Explanation:

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3 years ago

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Which of the following is not an external force that acts on rocks in the rock cycle? A) wind B) pressure C) ice D) water

miss Akunina [59]

Wind isn’t an external force that acts in the rock cycle.

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4 years ago

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Consider the reaction: P(s) + 5/2 Cl2(g)PCl5(g) Write the equilibrium constant for this reaction in terms of the equilibrium con

Pani-rosa [81]

Answer: The equilibrium constant for the overall reaction is $K_a\times K_b$

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios.

a) $P(s)+\frac{3}{2}Cl_2(g)\rightarrow PCl_3(g)$

$K_a=\frac{[PCl_3]}{[Cl_2]^{\frac{3}{2}}}$

b) $PCl_3(g)+Cl_2(g)\rightarrow PCl_5(g)$

$K_b=\frac{[PCl_5]}{[Cl_2]\times [PCl_3]}$

For overall reaction on adding a and b we get c

c) $P(s)+\frac{5}{2}Cl_2(g)\rightarrow PCl_5(g)$

$K_c=\frac{[PCl_5]}{[Cl_2]^\frac{5}{2}}$

$K_c=K_a\times K_b=\frac{[PCl_3]}{[Cl_2]^{\frac{3}{2}}}\times \frac{[PCl_5]}{[Cl_2]\times [PCl_3]}$

The equilibrium constant for the overall reaction is $K_a\times K_b$

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3 years ago

Difference between ntp and stp

Phantasy [73]

Answer:

STP stands for Standard Temperature and Pressure. NTP stands for Normal Temperature and Pressure.

Explanation:

STP is set by the IUPAC as 0°C and 100 kPa or 1 bar.

NTP is set at 101.325 kPa but uses 20°C as the temperature

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3 years ago

What information is needed to determine the amount of moles in 1.6g of HCL?

alukav5142 [94]

Answer:

Molar mass and Mass

Explanation:

The relationship between mass and number of moles is given as;

Number of moles = Mass / Molar mass

Mass = 1.6 g

Molar mass of HCl = ( 1 + 35.5 ) = 36.5 g/mol

Number of moles = 1.6 g / 36.5 g/mol

Number of moles = 0.0438 mol

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3 years ago