Question

Balance the reaction in basic medium. (6pts) K2Cr2O7 + Na2SO3 + H2O → Cr(OH)3 + Na2SO4 + KOH

219

likes

1097 views

Answer to a math question Balance the reaction in basic medium. (6pts) K2Cr2O7 + Na2SO3 + H2O → Cr(OH)3 + Na2SO4 + KOH

$Expert avatar$

Tiffany

4.5

103 Answers

First, let's write down the unbalanced chemical equation:

K_2Cr_2O_7 + Na_2SO_3 + H_2O \rightarrow Cr(OH)_3 + Na_2SO_4 + KOH

Next, we need to balance the equation by making sure that the number of atoms of each element is the same on both sides of the equation.

1. Balance the elements other than hydrogen and oxygen:

K_2Cr_2O_7 + 3Na_2SO_3 + H_2O \rightarrow 2Cr(OH)_3 + 3Na_2SO_4 + 2KOH

2. Balance the oxygen atoms by adding water molecules:

K_2Cr_2O_7 + 3Na_2SO_3 + 4H_2O \rightarrow 2Cr(OH)_3 + 3Na_2SO_4 + 2KOH

3. Balance the hydrogen atoms by adding hydroxide ions (OH⁻):

K_2Cr_2O_7 + 3Na_2SO_3 + 4H_2O \rightarrow 2Cr(OH)_3 + 3Na_2SO_4 + 2KOH

Therefore, the balanced chemical equation in basic medium is:

\boxed{K_2Cr_2O_7 + 3Na_2SO_3 + 4H_2O \rightarrow 2Cr(OH)_3 + 3Na_2SO_4 + 2KOH}

Frequently asked questions (FAQs)

Math question: What is the smallest value of n for which the equation x^n + y^n = z^n has non-trivial integer solutions, disproving Fermat's Theorem? (

Question: Graph the logarithmic function y = log(2x) and identify the coordinates of the point where the graph intersects the x-axis.

What is the area of a triangle with base of length 8 and a height of 5?

New questions in Mathematics

How to find the value of x and y which satisfy both equations x-2y=24 and 8x-y=117

CASE 6-1: PREPARE A PRODUCTION PLAN: WHAT PROBLEMS ARRIVE? Midwest Plastics Company has conducted profit planning for several years. The president stated (with justification) that inventory control and planning had not been satisfactory, which was mainly due to poor planning of production and inventory budgets. Please analyze and provide recommendations, in detail, on the issue regarding the 20B profit plan, which is now being prepared. Their analysis and recommendations will be presented to the executive committee. Despite the seasonality factor, the sales department has been successful in developing a sales plan, on a monthly basis, for each year. The following sales data is available for 20B. 1. Sales plan summary for 20B: 2. Finished goods inventory, as of January 1, 20B, is 96,000 units. 3. Work-in-process inventory will remain constant. 4. Actual annual sales in 20A, including the estimate for December, were 350,000 units. 5. The average finished goods inventory during 20A was 70,000 units. IT IS REQUESTED. 1. Prepare the annual production budget, assuming that management policy is to budget ending finished goods inventory at a standard quantity, based on the ratio of historical sales of 20A to inventory turnover. 2. Prepare a schedule showing sales, production, and inventory levels for each month, assuming: 1) stable inventory, 2) stable production, and 3) recommended inventory-production levels. In developing your recommendations, assume that the following policies have been established: a) The president has set the policy that a maximum inventory of 85,000 units and a minimum inventory of 75,000 units should be used, except in abnormal circumstances. b) A stable level of production is definitely preferred, except that during the holiday season in July and August, production may be reduced by 25 percent. Likewise, a variation in production of 7.5 percent above and below the average level is acceptable. 3. What are the main problems faced by the company in production planning? Make your general recommendations.

STUDENTS IN A CLASS LEARN ONLY ONE FOREIGN LANGUAGE. two-sevenths of the students learn German, half of the students learn Spanish, and the remaining six students learn Italian. what is the number of students in this class? detail your reasoning carefully.

4.2x10^_6 convert to standard notation

The sum of two numbers is 6, and the sum of their squares is 28. Find these numbers exactly

Find the root of x^4-10x^ 5=0 using Newton's method, with a precision of the smallest positive root.

(3x^(2) 9x 6)/(5x^(2)-20)

Suppose the horses in a large they will have a mean way of 818 pounds in a variance of 3481. What is the probability that the mean weight of the sample of horses with differ from the population mean by more than 18 pounds is 34 horses are sampled at random from the stable.

To make brine, José buys 1 kg of salt and pays 12 pesos. If he buys 4 kg, they charge him 48 pesos, but for 100 pesos they sell him 9 kg. What is the constant of proportionality?