General Chemistry Answers

In an analysis of interhalogen reactivity, 0.500 mol of ICl

was placed in a 5.00-L flask, where it decomposed at a high T:

2ICl(g) ⥫⥬ I2(g) + Cl2(g)

Calculate the equilibrium concentrations of I2, Cl2, and ICl (Kc =

0.110 at this temperature).

1. What is the molar concentration of 1.0 mol of KCl dissolved in 750.0 mL of solution?

 A 6.6 x 10 ^-6 M solution of nitric acid

When nitric acid is synthesized from Ammonia, the first step in the process is 4NH3(g) + 5O2(g) + 4NO (g) + 6H2O (g)

What volume of NO at STP can be formed from 1250L of NH3 at 325°C and 4.25 atm assuming temperature and pressure conditions remains constant

Using the same balance, a chemist obtained the values 5.224g, 5.235g and 5.25g for the mass of a sample. The measurements have ?

When 2.5g of Al reacts with 5.0g of Cl2

Given the reaction: 4NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (l)

When 1.25 mole of ammonia reacts, what will be the total number of moles of

products formed?

Compute the corresponding [OH-] or [H3O+] in each of the following conditions. Describe the condition as acidic or basic.

1. [H30]=2.3 x 10 M

2. [OH-] = 7.4x10-³M

3. [H30]=8.7 x 10-M

Look for the Sº of the reactants and products. Compute for the AS of the reactions.

1. 4Al(s) +302(g) → 2Al2O(s)

2. Agz Sis) 2Ag* (aq) + S²² (aq) 3. C₂H) +502(g) → 3C02(g) + 4H2O(g)

A buffer solution of pH 7.30 will be prepared from a 50.00ml solution of 0.075 M NaH₂PO4 (K₂= 6.3 x 108). How many grams of NaH₂PO4 must be dissolved in the solution to get the desired pH? (molar mass of NaH₂PO4= 119.0g/mol).